Fonds consists of personal and professional papers created by Terrence Heath, a Saskatchewan freelance writer, cultural consultant, and curator. While the arrangement of series differs somewhat between accessions, as a whole the fonds contains corresspondence, financial records, personal files, publications, drafts and photographs, the bulk of which relate to Heath's writing and to his consulting activities. Of particular note is his vast correspondence with cultural organizations and galleries, government agencies, professional organizations, publishers and book dealers, universities, media outlets, writers, poets, artists, friends, family and others, which provide a wealth of information about the literary and cultural scene in Canada. The extensive series of Heath's writings and publications including articles, essays, reviews, books, exhibition catalogues, poetry, consultant's reports, manuscripts, plays, radio scripts and commentaries, filmscripts, short stories, student papers, and talks, provide insight into his development as a writer and his wide-ranging expertise in the cultural arena. Along with the writings and publications by other authors contained in the fonds, these records serve as a rich source for the study of Canada's cultural history chiefly during the 1970s, 1980s, and early 1990s. Small quantities of personal documents and financial records are also included.

Fonds consists of 18 series: Biographical Material;Family; Personal; Early Recreation; Education; Army Service; Working Career; Personal Art Interests and Activities; Professional Activities; Professional Organizations; Writing; Newspaper Clippings; Photographs and Negatives; Publications; Scrapbooks; Slides; Sound Tapes; Death. Most series are subdivided into series and sub-series. Of particular note are: Correspondence; King's College, Cambridge University; Supreme Headquarters Allied Expeditionary Force (SHAEF); Monuments, Fine Arts and Archives (MFA); Wiesbaden, Germany (Allied Restitution of Nazi Looted Art); Henry E. Huntington Library; Metropolitan Museum of Art; Royal Ontario Museum; University of Saskatchewan, Regina Campus; and York University. Although Heinrich did not publicly proclaim his homosexuality, this aspect of his life is also reflected in his papers and thus they represent a rare source of information on the homosexual lifestyle, particularly in the 1940s and 50s. The travel photographs of both Heinrich and his father, Edward Oscar Heinrich, are particularly noteworthy, as are Heinrich's photographs relating to World War II and the MFA.