Contains correspondence, writings, photographs, clippings, flyers, and other ephemera. Of note are interviews, writings, and memorial texts, written by Vidich, related to Hans Speier, Joseph Bensman, Stanford Lyman, and Stanley Diamond. Vidich frequently collaborated with Bensman, Lyman, and Robert Jackall as a co-writer and co-editor--these collaborative materials are found in the Professional activities series, arranged by title.