The USDA Plant Introduction Station Records consist of correspondence, notes, reports, plant inventories, photographs, lists, books, and drawings from files compiled by the Bureau of Plant Industry's plant introduction garden in Miami, Florida. The bulk of the files contain primarily notes, correspondence, clippings, and pamphlets on the subject of mangoes. There is also original and copy correspondence between David G. Fairchild and personnel at the Miami station. Other records include documents from Fairchild's 1939-1941 Pacific expedition, and notebooks of F. Wilson Popenoe recording his observations of mangoes in India. In addition, there are a few items related to the investigation of cryptostegia as an alternative source of rubber during World War II. The materials include binders with plant introduction reports on the following tropical crops: Annona (anona), artichoke, avocado, carob, chayote, lychee (litchi), mango, and papaya. There are also three volumes of supplemental reports on the Miami plant introduction station's activities, and a list of rubber-producing plants. Among the bound volumes are reports of David Fairchild's trips to the Miami station in 1913, 1914, and 1915.