This collection consists of materieals from Joel Marrant's faculty career at Linfield, including research surrounding Romania, articles written by Marrant, and books from his personal library. Bulk of the collection consists of his focus on Romania in the 1960s-1990s.

The collection contains papers, photographs, mimeograph sheets, transparencies, inventory cards, guestbooks, notebooks, films, pamphlets, programs, equipment, and other ephemera relating to the founding and operation of Linfield Research Institute. It also contains awards given to director Walter Dyke, as well as scientific equipment used at the Institute.