Merged with: Smithsonian Institution. Board of Regents. Annual report of the Board of Regents of the Smithsonian Institution, and: Smithsonian Institution. Report of the Secretary of the Smithsonian Institution and financial report of the Executive Committee of the Board of Regents, to form: Smithsonian Institution. Smithsonian year (1965)
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (70 years p.m.a.), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.