Series 1. Cinchona Scientific File. 1915-1951
Series 2. Cinchona Products Institute. 1631, 1937-1954
Series 3. Flora of Long Island. 1917-1925
Series 4. Taylor's Encyclopedia of Gardening. 1932-1966
Series 6. Publications. 1905-1967
Series 7. Contracts. 1947-1964
Series 8. Unpublished Works. 1926-1967
Series 9. Lecture Notes and Lantern Slides. 1916-1962
Series 10. Correspondence. 1912-1967
Series 12. Expeditions and Travel. 1904-1967