Author:George Grant MacCurdy
- "Recent discoveries bearing on the antiquity of man in Europe" in Annual Report of the Board of Regents of the Smithsonian Institution for 1909, pages 531–583 (1910)
- "Ancient Man, his Environment and his Art" in Popular Science Monthly, 83 (July 1913)
- "On Pithecanthropus erectus", by Léonce-Pierre Manouvrier in The American Journal of Science Series 4, Volume 4, (1897), pp. 213–234.
Some or all works by this author are in the public domain in the United States because they were published before January 1, 1928.
The longest-living author of these works died in 1947, so these works are in the public domain in countries and areas where the copyright term is the author's life plus 75 years or less. These works may be in the public domain in countries and areas with longer native copyright terms that apply the rule of the shorter term to foreign works.