1. Richard M. Pearce, 1906. 2. Richard M. Pearce, 1906. 3. Major Richard M. Pearce, 1918. 4. Richard M. Pearce, Chile, 1919. 5. Dinner in honor of Richard M. Pearce, Sao Paulo, Brazil, 1919. 6. Dinner in honor of Richard M. Pearce, Sao Paulo, Brazil, 1922. 7. Bender Laboratory and staff, Albany New York, 1904-1909. 8. Richard M. Pearce and Dr. Urrutia, acting as interpreter, Buenos Aires, Argentina, [January 17, 1927]. 9. Richard M. Pearce, Dr. Crowell and Mrs. Crowell, Rio de Janeiro, 1919. 10. Richard M. Pearce and group, Santiago, Chile, 1919. 11. Richard M. Pearce and group, Chile, 1919. 12. Bailey K. Ashford, Richard M. Pearce, John A. Ferrell, and fourth individual, Rio de Janeiro, 1916. 13. Richard M. Pearce and the staff of Portuguese Hospital, Rio de Janeiro, 1916. 14. Richard M. Pearce visiting a coffee plantation, Sao Paulo, 1916. 15. Richard M. Pearce, mayor and health officers, Rio Grande, 1916. 16. Richard M. Pearce and group, Germany, 1901. 17. Richard M. Pearce and group, University of Pennsylvania, 1902. 18. Richard M. Pearce with group of Japanese doctors, Tokyo, Japan, 1921. 19. Lewis Hackett, Richard M. Pearce, and George K. Strode, Nictheroy, Brazil, 1917. 20. Richard M. Pearce, Bailey K. Ashford, Juan Gutierrez, Puerto Rico, 1917.