Fonds includes materials related to Steinberg’s work as at the University of British Columbia, some early work from his own university days, and materials pertaining to his work with the local Jewish community. Includes correspondence, research materials, drafts, manuscripts, and other materials.

Fonds consists of personal correspondence, newspaper clippings and manuscripts; as well as, memorial tributes, cards and letters of sympathy pertaining to the passing of Sonthoff. The fonds is arranged in the following series: Correspondence, Essays and Criticisms and Memorial Tributes.

The fonds contains correspondence, contracts and royalty information, reviews, research notes, drafts of various manuscripts and productions, and ephemera from speaking engagements. It consists of the following series: “General Correspondence, contractual information, publicity, and etc.,” “Novels,” “Plays,” “Radio Productions,” “Children’s Books,” “Multimedia”, and “Photographs".

Fonds consists of textual records, including a bound copy of McGregor's Ph.D. thesis (1978), manuscripts for an article (1985) and a conference paper (1985), and a black-and-white photograph (1980).