Correspondence in this series: Adams, Lee 1957–1960; Allee, R. H. 1942–1945; “A” Miscellaneous 1938–1962 (Bulk, 1940-1949); Baldwin, J.T. 1942–1956; Barneby, Rupert C. 1941–1956; Bartlett, H. H. 1925–1956; Bieter, Raymond N 1939–1957; Billings, W.D. 1948–1954; “B” Miscellaneous 1938–1957; Camargo, Felisberto 1942–1951; Castro, Rudolfo 1931–1932; Chase, Agnes 1935–1936; Clayton, E. E. 1935–1936; Constance, Lincoln 1953–1958; Correll, Donovan S. 1956–1959; Cronquist, Arthur 1958; “C” Miscellaneous 1931–1961; Descole, H.R. 1941–1942; Dunn, David B. 1953–1956; “D” Miscellaneous 1941–1953; Edwin, Gabriel 1951–1969; Erskine, Esme n/a; Erlanson, C.O. 1936–1942; Escuela de Agricultura Medellin, Colombia 1929–1931; “E” Miscellaneous 1954–1956