This collection contains material pertaining to the sociologist Werner Cahnman and his wife, the biophysicist Gisella Levi Cahnman. It primarily documents the early years and immigration of Werner Cahnman, as well as his and his wife's careers in the United States. It also illustrates the immigration of family members. Papers in this collection include a large amount of photographs, correspondence, diaries, some writings, official papers, and restitution files.