Contains diaries, field notes, and writings by Van Buren related to the South American Expedition. Materials date from between 1899 and 1902.

Contains first-hand accounts and retrospective articles on the South American Expedition. Includes diaries, correspondence, field notes, and articles. Much of the material focuses on the contributions of Benjamin Cluff Jr. and Chester G. Van Buren. Collection was compiled by Vasco M. Tanner, and includes his own research and writing on the expedition.

Contains handwritten journals, typescripts of journals, handwritten and typewritten correspondence to, from and concerning Van Buren and the expedition, supply lists, financial papers, certificates, passports, maps and photographs concerning the expedition. The majority of the material dates from 1900-1903.

Contains diaries, field notes, articles, and other materials about Van Buren and his participation in the South American Expedition. Materials date from between 1899 and 1968.