Arroyo’s determinations, undated

These subject oriented correspondence files include expedition reports, supply lists, specimen determinations, annual reports, book reviews, grant applications and manuscripts. Included are files on Cassia research in conjunction with Rupert Barneby, a Cassieae key, the early use of computers in taxonomy, Time-Life, Crowell-Collier and University of Texas publishers, the Museu Goeldi, the Smithsonian and its specimen determinations from British Guiana expeditions, photographs from the 1963 Suriname Expedition and a file of letters written to Thomas Hubbard, Board member who chaired the CEO Search Committee, entitled parting thoughts.