This collection was donated by Dr. Rogers in June of 1980, and consists of his professional papers from 1950 onwards. The bulk of the collection concerns two main topics: Firstly, Dr. Rogers’ directorship of the Taximetrics Laboratory at the University of Colorado, including correspondence, publications on TAXIR, and documents pertaining to taximetric projects and consultations; secondly, Dr. Roger’s systematic collection and study of Manihot in Latin America, including notes, taximetric analysis, and publication drafts. Beyond these two topics, the collection also contains manuscripts, materials related to his work as a scientific journal editor, academic materials from his professorial work, documents pertaining to the Food and Agriculture Organization of the United Nations, conference and botanical society materials, and personal materials such as calendars and financial documents.