1. Abbott C. G. 1933. Report of the Secretary of the Smithsonian Institution for the year ending June 30, 1932. Annual Report of the Board of Regents of the Smithsonian Institution, showing the operations, expenditures, and condition of the Institution for the year ending June 30, 1932. United States Government printing office, Washington: 1-89.
2. Abbott C. G. 1935a. Report of the Secretary of the Smithsonian Institution for the year ending June 30, 1933. Annual Report of the Board of Regents of the Smithsonian Institution, showing the operations, expenditures, and condition of the Institution for the year ending June 30, 1933. United States Government printing office, Washington: 1-68.
3. Abbott C. G. 1935b. Report of the Secretary of the Smithsonian Institution for the year ending June 30, 1934. Annual Report of the Board of Regents of the Smithsonian Institution, showing the operations, expenditures, and condition of the Institution for the year ending June 30, 1934. United States Government printing office, Washington: 1-69.
4. Abbott C. G. 1937. Report of the Secretary of the Smithsonian Institution for the year ending June 30, 1936. Annual Report of the Board of Regents of the Smithsonian Institution, showing the operations, expenditures, and condition of the Institution for the year ending June 30, 1936. United States Government printing office, Washington: 1-96.
5. Anonymous 1927. The Walter Rathbone Bacon scholarship. Science 66: 445.