This collection consists of Hamilton Paul Traub's correspondence from 1922 to 1925, largely regarding the founding and operations of the National Horticultural Society (NHS). The collection also contains administrative documents from the Society, including fellowship applications, society dues collection documents, meeting minutes, by-laws and legal documents, and other internal documents. Additionally, there are handwritten note pages and documents collected from other societies in America, potentially being used as reference for development of the NHS. The collection was deposited by the American Horticultural Society, a competing society that arose around the same time, in May of 1985.