Volume 6: 1829-2170, undated

Compiled between 1940 and 1950, the Cinchona literature series organizes the information on Cinchona, a Merck project on which Krukoff worked. Consisting of abstracts, typescripts, tearsheets, translations and citations of published and unpublished information on the cultivation, harvesting, diseases and analysis of Cinchona, the articles are divided into eight volumes and paginated 1-3228. All but 95 of the listed articles and books are included in this series. The "series guide" folder includes an author index. See also the unpublished manuscript in the Missouri Botanical Garden Archives entitled History of the Cinchona project 1944-1960.