The fonds consists of records documenting Juda Quastelʹs activities as a scientist from 1917 to 1987. Series include biographical information; correspondence; presentations and lectures; scientific research, notes, and data; written reports, published and unpublished materials; photographs, slides, glass plates, and audiovisual material. Collectively, these records reflect Quastelʹs various scientific roles as researcher, professor, author, and public speaker. Some records (i.e. particular correspondence and photographs) also reveal Quastelʹs personal life as husband and father.