Natural dye

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Naturally dyed skeins made with madder root, Colonial Williamsburg, VA

Natural dyes are

fungi.[1]

oak galls and a range of other plants/plant parts, "pseudo-tannins", such as plant-derived oxalic acid, and ammonia from stale urine
. Plants that bio-accumulate aluminum have also been used. Some mordants, and some dyes themselves, produce strong odors, and large-scale dyeworks were often isolated in their own districts.

Throughout history, people have dyed their textiles using common, locally available materials, but scarce dyestuffs that produced brilliant and permanent colors such as the natural invertebrate dyes

saffron, and madder were important trade goods in the economies of Asia, Africa and Europe. Dyes such as cochineal and logwood (Haematoxylum campechianum) were brought to Europe by the Spanish
treasure fleets, and the dyestuffs of Europe were carried by colonists to America.

The discovery of man-made synthetic dyes in the mid-19th century triggered a long decline in the large-scale market for natural dyes. In the early 21st century, the market for natural dyes in the fashion industry is experiencing a resurgence.[4] Western consumers have become more concerned about the health and environmental impact of synthetic dyes—which require the use of toxic fossil fuel byproducts for their production—in manufacturing and there is a growing demand for products that use natural dyes.

Dyes in use in the fashion industry

Oaxaca artisan Fidel Cruz Lazo dying yarn for rug making

Because of their different molecular structure, cellulose and protein fibres require different mordant treatments to prepare them for natural dyes.

  • Cellulose fibres: cotton, linen, hemp, ramie, bamboo, rayon
  • Protein fibres: wool, angora, mohair, cashmere, silk, soy, leather, suede

Cellulose fibres have a lower affinity for natural dyes than do protein fibres. The most common method for preparing cellulose fibres is to use a tannin first (tannins have high affinity for both protein and cellulose fibres), then use an aluminum salt. The most common method for preparing protein fibres is to use alum. However, the historic record contains many hundreds of different mordanting methods for both protein and cellulose fibres.

The types of natural dyes currently popular with craft dyers and the global fashion industry include:[5]

Animal-derived dyes

Plant-derived dyes

Origins

Colors in the "ruddy" range of reds, browns, and oranges are the first attested colors in a number of ancient textile sites ranging from the

weft" were discovered in Egyptian pyramids of the Sixth Dynasty (2345–2180 BCE).[9]

The chemical analysis that would definitively identify the dyes used in ancient textiles has rarely been conducted, and even when a dye such as indigo blue is detected it is impossible to determine which of several indigo-bearing plants was used.[10] Nevertheless, based on the colors of surviving textile fragments and the evidence of actual dyestuffs found in archaeological sites, reds, blues, and yellows from plant sources were in common use by the late Bronze Age and Iron Age.[11]

In the 18th century Jeremias Friedrich Gülich made substantial contributions to refining the dyeing process,[12] making particular progress on setting standards on dyeing sheep wool and many other textiles.[13] His contributions to refining the dyeing process and his theories on color brought much praise by the well known poet and artist Johann Wolfgang von Goethe.[12]

Processes

Further information: Glossary of dyeing terms
Dyeing wool cloth, 1482, from British Library Royal MS 15.E.iii, f. 269.

After mordanting, the essential process of dyeing requires soaking the material containing the dye (the dyestuff) in water, adding the textile to be dyed to the resulting solution (the dyebath), and bringing the solution to a simmer for an extended period, often measured in days or even weeks, stirring occasionally until the color has evenly transferred to the textiles.[14]

Some dyestuffs, such as

fibres
. These dyes are called adjective dyes or "mordant dyes". By using different mordants, dyers can often obtain a variety of colors and shades from the same dye, as many mordants not only fix the natural dye compounds to the fibre, but can also modify the final dye color. Fibres or cloth may be pretreated with mordants (pre-mordant), or the mordant may be incorporated in the dyebath (meta-mordant, or co-mordant), or the mordanting may be done after dyeing (post-mordant).

Odisha, India
.

Natural alum (aluminum sulfate) has been the most common metallic salt mordant for millennia (see

club mosses) were also commonly used as mordants in parts of Europe, but are now endangered in many areas. The Symplocos
genus of plants, which grows in semi-tropical regions, also bioaccumulates aluminum, and is still popular with natural dyers.

Using natural dyes to color the yarn of Tasar silk.

Across Asia and Africa and the Americas, patterned fabrics were produced using

leheria.[18]

Some mordants and some dyestuffs produce strong odours, and the process of dyeing often depends on a good supply of fresh water, storage areas for bulky plant materials, vats which can be kept heated (often for days or weeks) along with the necessary fuel, and airy spaces to dry the dyed textiles. Ancient large-scale dye-works tended to be located on the outskirts of populated areas.[19]

Common dyestuffs

woad
(blue).
University of Pennsylvania Museum

Reds and pinks

A variety of plants produce red (or reddish) dyes, including a number of

red coats of military uniforms until the market collapsed following the development of synthetic alizarin dye in 1869. Madder was also used to dye the "hunting pinks" of Great Britain.[21]

Turkey red was a strong, very fast red dye for cotton obtained from madder root via a complicated multistep process involving "sumac and oak galls, calf's blood, sheep's dung, oil, soda, alum, and a solution of tin".[22] Turkey red was developed in India and spread to Turkey. Greek workers familiar with the methods of its production were brought to France in 1747, and Dutch and English spies soon discovered the secret. A sanitized version of Turkey red was being produced in Manchester by 1784, and roller-printed dress cottons with a Turkey red ground were fashionable in England by the 1820s.[23][24]

Munjeet or Indian madder (Rubia cordifolia) is native to the

Himalayas and other mountains of Asia and Japan. Munjeet was an important dye for the Asian cotton industry and is still used by craft dyers in Nepal.[25]

In tropical Asia, a red dye is obtained from sappanwood (

noni (Morinda citrifolia) roots, sapang (sappanwood), katuray (Sesbania grandiflora), and narra wood (Pterocarpus spp.), among other plants.[26]

Puccoon or bloodroot (

water oak (Quercus nigra L.) to produce red.[29]

A delicate rose color in

prickly pear cactus fruit, Opuntia polyacantha.[30] Navajo weavers also use rainwater and red dirt to create salmon-pink dyes.[31]

A diagram of the life cycle of a Polish Cochineal.

Technique

In

colorant) which, after straining, is discarded. After pressing and drying once again the red petals, the petals are re-hydrated again, at which time alkali made from the burnt ash of Chenopodium album var. centrorubrum is added to release the red colorant. The batch is then kneaded with one's hands and strained. Vinegar is then added to the solution, and the colorant is soaked up by using strips of linen. The strips of linen (now red) are then placed in a separate container and alkali obtained from the burnt ash of Chenopodium album var. centrorubrum is added once more to release the red absorbed by the linen. The solution obtained is then poured into a separate container. An extract made from plums that have been covered with soot and fumigated in a smoking pit for 24 hours, followed by a drying period of one month in the sun, is then used as a color fixing mordant.[32] The dried plums are steeped in water and mixed with the color pigment, causing the colorant to precipitate onto a piece of silk or any other desired material. The colorant at this stage has the consistency of fine, red mud. Color used as a dye can be diluted.[33] 1.5 kilograms (3.3 lb) of dried florets produces enough dye pigment to dye a small piece of fabric. The dye color is fixed in the fabric with a mordant
. Darker shades are achieved by repeating the dyeing process several times, having the fabric dry, and redyed.

Oranges

Dyes that create reds and yellows can also yield oranges. Navajo dyers create orange dyes from one-seeded juniper,

Thelesperma gracile,[34] or alder bark.[35]

Yellows

Yellow dyes are "about as numerous as red ones",

Eastern Black Oak (Quercus velutina), native to eastern North America and fustic from the dyer's mulberry tree (Maclura tinctoria) of the West Indies and Mexico.[37]

In

Xanthorhiza simplicissima) provide a rich yellow color.[27] Chitimacha basket weavers have a complex formula for yellow that employs a dock plant (most likely Rumex crispus) for yellow.[40] Navajo artists create yellow dyes from small snake-weed, brown onion skins, and rubber plant (Parthenium incanum). Rabbitbush (Chrysothamnus) and rose hips produce pale, yellow-cream colored dyes.[35]

Greens

If plants that yield yellow dyes are common, plants that yield green dyes are rare. Both woad and indigo have been used since ancient times in combination with yellow dyes to produce shades of green.

Lincoln, a great cloth town in the high Middle Ages, produced the Lincoln green cloth associated with Robin Hood by dyeing wool with woad and then overdyeing it yellow with weld or dyer's greenweed (Genista tinctoria), also known as dyer's broom.[41] Woolen cloth mordanted with alum and dyed yellow with dyer's greenweed was overdyed with woad and, later, indigo, to produce the once-famous Kendal green.[39]
This in turn fell out of fashion in the 18th century in favor of the brighter Saxon green, dyed with indigo and fustic.

Soft olive greens are also achieved when textiles dyed yellow are treated with an iron mordant. The dull green cloth common to the Iron Age

Halstatt culture shows traces of iron, and was possibly colored by boiling yellow-dyed cloth in an iron pot.[42] Indigenous peoples of the Northwest Plateau in North America used lichen to dye corn husk bags a sea green.[43]

Navajo textile artist Nonabah Gorman Bryan developed a two-step process for creating green dye. First the

Churro wool yarn is dyed yellow with sagebrush, Artemisia tridentata, and then it is soaked in black dye afterbath.[30] Red onion skins are also used by Navajo dyers to produce green.[35]

Blues

See also: Indigo dye
Traditional natural dyeing (Korean blue – Persicaria tinctoria)

Blue colorants around the world were derived from indigo dye-bearing plants, primarily those in the genus Indigofera, which are native to the tropics. The primary commercial indigo species in Asia was true indigo (Indigofera tinctoria). India is believed to be the oldest center of indigo dyeing in the Old World. It was a primary supplier of indigo dye to Europe as early as the Greco-Roman era. The association of India with indigo is reflected in the Greek word for the dye, which was indikon (ινδικόν). The Romans used the term indicum, which passed into Italian dialect and eventually into English as the word indigo.

In the Philippines, blue to indigo colors were also obtained from Indigofera tinctoria and related species, known under common names including tarum, dagum, tayum.[26]

In Central and South America, the important blue dyes were Añil (Indigofera suffruticosa) and Natal indigo (Indigofera arrecta).[44]

In temperate climates including Europe, indigo was obtained primarily from woad (

Polygonum tinctorum) from Japan and the coasts of China, and the West African shrub Lonchocarpus cyanescens.[45] The cultivation of indigo was swiftly displaced by synthetic indigo,[when?] which is identical to the natural material and environmentally friendlier as its production did not require hundreds of square kilometers of monoculture.[citation needed
]

Examples of dyeing with indigo

  • A traditional dyer from Jaipur, India
    A traditional dyer from Jaipur, India
  • A traditional brass container used to dye cloth in quantity
    A traditional brass container used to dye cloth in quantity
  • Hands stained with indigo
    Hands stained with indigo

Purples

In

Brazilwood also gave purple shades with vitriol (sulfuric acid) or potash.[46] In China, purple root/gromwell (Lithospermum purpurocaeruleum
) has been used to produce a purple dye.

Choctaw artists traditionally used maple (

Rocky Mountain states and mulberry (morus nigra) (with an acid mordant).[47]

Browns

Acacia catechu, used in India for dyeing cotton. Cutch gives gray-browns with an iron mordant and olive-browns with copper.[48]

wild walnuts (Juglans major).[49] Khaki, which translates a Hindustani word signifying "soil-colored", was introduced into British uniforms in India, which were dyed locally with a dye prepared from the native mazari palm Nannorrhops.[citation needed
]

Grays and blacks

Juniper mistletoe (Phoradendron juniperinum).[35]

In the Philippines, black dye was obtained from ebony (knalum or batulinao) leaves, as well as from indigo.[26]

Lichen

White wool yarn dyed with "orchella weeds"

Dye-bearing

cudbear (also called archil in England and litmus in the Netherlands), and crottle.[50]

Fungi

The American artist

Pisolithus tinctorius are used in dyeing textiles and paper.[52]

Luxury dyestuffs

Byzantine Emperor Justinian I clad in Tyrian purple, 6th-century mosaic at Basilica of San Vitale, Ravenna, Italy

From the second millennium BC to the 19th century, a succession of rare and expensive natural dyestuffs came in and out of fashion in the ancient world and then in Europe. In many cases the cost of these dyes far exceeded the cost of the wools and silks they colored, and often only the finest grades of fabrics were considered worthy of the best dyes.

Royal purple

The premier luxury dye of the ancient world was

Murex brandaris (currently known as Bolinus brandaris). Murex dye was greatly prized in antiquity because it did not fade, but instead became brighter and more intense with weathering and sunlight. Murex dyeing may have been developed first by the Minoans of East Crete or the West Semites along the Levantine coast, and heaps of crushed murex shells have been discovered at a number of locations along the eastern Mediterranean dated to the mid-2nd millennium BC. The classical dye known as Phoenician Red was also derived from murex snails.[11]

Murex dyes were fabulously expensive – one snail yields but a single drop of dye – and the

porphyrogenitos or "born in the purple" was a term for Byzantine offspring of a reigning Emperor. The color matched the increasingly rare purple rock porphyry
, also associated with the imperial family.

Crimson and scarlet

Tyrian purple retained its place as the premium dye of Europe until it was replaced "in status and desirability"

Mediterranean region). The dye is of ancient origin; jars of kermes have been found in a Neolithic cave-burial at Adaoutse, Bouches-du-Rhône.[55] Similar dyes are extracted from the related insects Porphyrophora hamelii (Armenian cochineal) of the Caucasus region, Porphyrophora polonica (Polish cochineal or Saint John's blood) of Eastern Europe, and the lac-producing insects of India, Southeast Asia, China, and Tibet.[56][57][58]

When kermes-dyed textiles achieved prominence around the mid-11th century, the dyestuff was called "grain" in all Western European languages because the desiccated eggs resemble fine grains of wheat or sand.[53] Textiles dyed with kermes were described as dyed in the grain.[57] Woollens were frequently dyed in the fleece with woad and then piece-dyed in kermes, producing a wide range colors from blacks and grays through browns, murreys, purples, and sanguines.[57] By the 14th and early 15th century, brilliant full grain kermes scarlet was "by far the most esteemed, most regal" color for luxury woollen textiles in the Low Countries, England, France, Spain and Italy.[53]

Oaxaca by indigenous producers, cochineal became Mexico's second most valued export after silver.[60] Cochineal produces purplish colors alone and brilliant scarlets when mordanted with tin; thus cochineal, which produced a stronger dye and could thus be used in smaller quantities, replaced kermes dyes in general use in Europe from the 17th century.[61][62]

The rise of formal black

During the course of the 15th century, the civic records show brilliant reds falling out of fashion for civic and high-status garments in the Duchy of Burgundy in favor of dark blues, greens, and most important of all, black.[63][64] The origins of the trend for somber colors are elusive, but are generally attributed to the growing influence of Spain and possibly the importation of Spanish merino wools. The trend spread in the next century: the Low Countries, German states, Scandinavia, England, France, and Italy all absorbed the sobering and formal influence of Spanish dress after the mid-1520s.[64][65]

Producing fast black in the Middle Ages was a complicated process involving multiple dyeings with woad or indigo followed by mordanting, but at the dawn of

ferrous sulfate (copperas) mordant.[54][64] Despite changing fashions in color, logwood was the most widely used dye by the 19th century, providing the sober blacks of formal and mourning clothes.[54]

Decline and rediscovery

Synthetic dyes, which could be quickly produced in large quantities, quickly superseded natural dyes for the commercial textile production enabled by the

Arts and Crafts Movement preferred the rich, complex colors of natural dyes, since many natural dye sources contain more than one type of dye compound, unlike synthetic dyes which tend to rely on a single type of dye compound, creating a flatter visual effect. This helped ensure that the old European techniques for dyeing and printing with natural dyestuffs were preserved for use by home and craft dyers. Natural dyeing techniques are also preserved by artisans in traditional cultures around the world.[citation needed
]

Indigo-dyed and discharge-printed textile, William Morris, 1873

Synthetic dyes

The first synthetic dyes were discovered in the mid-19th century, starting with

aniline dye derived from coal tar.[66] Alizarin, the red dye present in madder, was the first natural pigment to be duplicated synthetically, in 1869,[67] leading to the collapse of the market for naturally grown madder.[22] The development of new, strongly colored aniline dyes followed quickly: a range of reddish-purples, blues, violets, greens and reds became available by 1880. These dyes had great affinity for animal fibres such as wool and silk. Although some new colors tended to fade and wash out, others were identical to natural dyes, e.g., indigo dye. By the 1870s commercial dyeing with natural dyestuffs was fast disappearing.[66]

Scientists continued to search for new synthetic dyes that would be effective on cellulose fibres like cotton and linen, and that would be more colorfast on wool and silk than the early anilines. Chrome or mordant dyes produced a muted but very fast color range for woollens. These were followed by acid dyes for animal fibres (from 1875) and the synthesis of indigo in Germany in 1880. The work on indigo led to the development of a new class of dyes called vat dyes in 1901 that produced a wide range of fast colors for cellulosic fibers such as cotton.[68] Disperse dyes were introduced in 1923 to color the new textiles of cellulose acetate, which could not be colored with any existing dyes. Today disperse dyes are the only effective means of coloring many synthetics. Reactive dyes for cotton were introduced in the mid-1950s. These petroleum based, synthetic dyes are used both in commercial textile production and in craft dyeing and have widely replaced natural dyes.[68]

Technique preservation

At the same time the

Pre-Raphaelite artist and founding figure of the Arts and Crafts movement William Morris took up the art of dyeing as an adjunct to his manufacturing business, the design firm of Morris & Co. Always a medievalist at heart, Morris loathed the colors produced by the fashionable aniline dyes. He spent much of his time at his Staffordshire dye works mastering the processes of dyeing with plant materials and making experiments in the revival of old or discovery of new methods. One result of these experiments was to reinstate indigo dyeing as a practical industry and generally to renew the use of natural dyes like madder which had been driven almost out of use by the commercial success of the anilines. Morris saw dyeing of wools, silks, and cottons as the necessary preliminary to the production of woven and printed fabrics of the highest excellence; and his period of incessant work at the dye-vat (1875–76) was followed by a period during which he was absorbed in the production of textiles (1877–78), and more especially in the revival of carpet- and tapestry-weaving as fine arts. Morris & Co. also provided naturally dyed silks for the embroidery style called art needlework.[69][70]

In America, synthetic dyes became popular among a wide range of Native American textile artists; however, natural dyes remained in use, as many textile collectors prefer natural dyes over synthetics. Today, dyeing with natural materials is often practiced as an adjunct to hand spinning, knitting and weaving.[71] It remains a living craft in many traditional cultures of North America, Africa, Asia, and the Scottish Highlands.[72]

Ecological consciousness has prompted a renewed interest in natural-dye techniques. The European Union, for example, has encouraged Indonesian batik cloth producers to switch to natural dyes to improve their export market in Europe.[73]

Contemporary reskilling

While historically, dyers possessed sophisticated knowledge of natural sources of true dye compounds, nowadays the internet contains a lot of inaccurate information about sources—predominantly foods—that are not supported by the historic record or by modern science. In natural dyeing, there are "fast" dye compounds (those that have the necessary molecular structure to form stable chemical bonds with mordants and fibres, and so provide good resistance to fading when washed, exposed to light, or subjected to normal rubbing/abrasion; these are found throughout the historic record), and there are "fugitive" compounds, which are not true dyes (those that fade and wash out quickly, as they lack the molecular structure to form stable bonds, or any bonds at all, to mordants and fibres). Mordanting can not fix fugitive sources to fibres.[74] Fugitive sources include nearly all berries, red cabbage, beets, spinach, black beans, most flowers (though some important true dyes are flower derived) and many others.[75]

Notes

  1. ISBN 9781119811718
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  2. ^ Goodwin (1982), p. 11.
  3. ^ Kerridge (1988), pp. 15, 16, 135.
  4. ISBN 978-1-59253-541-5
    .
  5. ISBN 978-1-59253-541-5
    .
  6. doi:10.18517/ijaseit.7.3.1014
    .
  7. doi:10.1051/matecconf/201815605004
    . Retrieved February 28, 2019.
  8. ^ a b Barber (1991), pp. 223–25.
  9. ^ Rogers, Penelope Walton, "Dyes and Dyeing". In Jenkins (2003), pp. 25–29.
  10. ^ Barber (1991), pp. 227, 237.
  11. ^ a b Barber (1991), pp. 228–29.
  12. ^ a b Goethe, Johann Wolfgang (1840). "Relation to the Technical Operations of the Dyer". Goethe's Theory of Colours. Translated by Eastlake, Charles Lock.
  13. ^ Goethe, Johann Wolfgang. "Jeremias Friedrich Gülich". Zur Farbenlehre [Goethe's Theory of Colours] (in German).
  14. ^ Goodwin (1982), pp. 29–31.
  15. ^ Barber (1991), pp. 235–36, 239.
  16. ^ Goodwin (1982), pp. 32–34.
  17. ^ Driessen, Kris. "Cleaning". Quilt History. Retrieved April 22, 2013.
  18. ^ Gillow & Sentence (1999), pp. 122–36.
  19. ^ Barber (1991), p. 239.
  20. ^ a b Barber (1991), p. 232.
  21. ^ a b Goodwin (1982), pp. 64–65.
  22. ^ a b Goodwin (1982), p. 65.
  23. ^ Tozer & Levitt (1983), pp. 29–30.
  24. ^ Cannon & Cannon (2002), p. 76.
  25. ^ Cannon & Cannon (2002), p. 80.
  26. ^ a b c Palasi, Kat (22 February 2022). "Philippine Natural Dyes: A Short Overview". HABI: The Philippine Textile Council. Retrieved 31 May 2023.
  27. ^ a b c Chancey (2005), p. 37.
  28. ^ a b c Chancey (2005), p. 51.
  29. ^ Chancey (2005), p. 66.
  30. ^ a b c d Bryan & Young (2002), p. 5.
  31. ^ Bryan & Young (2002), p. 62.
  32. ^ "Traditional knowledge of rural Japan: "ubai", carbonized plum for color fixing mordant". Satoyama Library. 28 May 2018. Retrieved 28 June 2021.
  33. YouTube, katakana
    (紅) Beni Red (safflower; carthamus tinctorius) / June 2018, minutes 5:22–9:45
  34. ^ Bryan & Young (2002), p. 6.
  35. ^ a b c d "12 Plant Navajo Dye Chart, Craftperson: Maggie Begay". Bair's Indian Trading Company. Archived from the original on July 7, 2011. Retrieved January 9, 2011.
  36. ^ a b c Barber (1991), p. 233.
  37. ^ a b Goodwin (1982), pp. 60–63.
  38. ^ Roth, Harold A. "Reseda luteola". Alchemy Works. Retrieved January 8, 2011.
  39. ^ a b Goodwin (1982), p. 63.
  40. ^ Chancey (2005), p. 47.
  41. ^ Cannon & Cannon (2002), p. 110.
  42. ^ Barber (1991), p. 228.
  43. ^ a b c Chancey (2005), p. 173.
  44. ^ Goodwin (1982), p. 70.
  45. ^ Goodwin (1982), pp. 11, 70–76.
  46. ^ Kerridge (1988), pp. 166–67.
  47. ^ Goodwin (1982), pp. 107, 112.
  48. ^ Goodwin (1982), p. 60.
  49. ^ Bryan & Young (2002), p. 61.
  50. ^ Goodwin (1982), pp. 87–92.
  51. ^ Beebee, Dorothy M. (November 30, 2010). "Mushrooms for Color". Retrieved January 9, 2011.
  52. ^ Beebee, Dorothy M. (Fall 2008). "Miriam C. Rice and Mushrooms for Color". Turkey Red Journal. Retrieved January 9, 2011.
  53. ^ a b c Munro, John H. "The Anti-Red Shift – To the Dark Side: Colour Changes in Flemish Luxury Woollens, 1300–1500". In Netherton and Owens-Crocker (2007), pp. 56–57.
  54. ^ a b c Schoeser (2007), p. 118.
  55. ^ Barber (1991), pp. 230–31.
  56. ^ Barber (1991), p. 231.
  57. ^ a b c Munro, John H. "Medieval Woollens: Textiles, Technology, and Organisation". In Jenkins (2003), pp. 214–15.
  58. ^ Goodwin (1982), p. 56.
  59. ^ Threads In Tyme, LTD. "Time line of fabrics". Archived from the original on October 28, 2005. Retrieved January 5, 2011.
  60. ^ Behan, Jeff (Spring 1995). "The bug that changed history". Boatman's Quarterly Review. 8 (2). Grand Canyon River Guides. Archived from the original on 21 June 2006. Retrieved 5 January 2011.
  61. ^ Schoeser (2007), pp. 121, 248.
  62. ^ Barber (1982), p. 55.
  63. ^ Munro (2007), pp. 76–77.
  64. ^ a b c Munro (2007), pp. 87–93.
  65. ^ Boucher & Deslandres (1987), pp. 219, 244.
  66. ^ a b Thompson & Thompson (1987), p. 10.
  67. ISBN 3527306730
    .
  68. ^ a b Thompson & Thompson (1987), pp. 11–12.
  69. ^ Dictionary of National Biography (1901), "William Morris"
  70. ^ Parry (1983), pp. 36–46.
  71. ^ Goodwin (1982), pp. 7–8.
  72. ^ Gillow & Sentance (1999), pp. 118–19.
  73. ^ Faizal, Elly Burhaini (October 29, 2011). "Indonesia told to produce more 'green' products". The Jakarta Post. Retrieved November 9, 2011.
  74. ^ Furry, Margaret S.; Viemont, Bess M. (August 1934). Home dyeing with natural dyes (Report). Washington, D.C.: U.S. Department of Agriculture, Bureau of Home Economics.
  75. JSTOR 41366682
    .

References

The section on William Morris incorporates text from the Dictionary of National Biography, supplemental volume 3 (1901), a publication now in the public domain.

See also

External links

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