A. S. (Albert Spear) Hitchcock – författare

#587-#778; #1316A-#1448 A. A. S. Hitchcock

British Guiana, 1919-1920, Washington, D.C., Including SI and Rock Creek Park; Cuba; Colorado and Wyoming, 1918

Albert Spear Hitchcock - Brief Report on a Trip to Ecuador, Peru and Bolivia, May 25, 1923-February 18, 1924

#782-#1118, A. S. Hitchcock

Asia, 1921, Georgia and Florida, Panama and Ecuador, 1923, Includes Photographs of Floyd A. McClure

#1757-#1975, Mary Agnes Chase Expedition to Brazil, 1924-1925

North American Species of Agrostis; Volume no.68