Columbia subject headings:
Harvard subject headings:
Manuscripts, Canadian--Alberta--Calgary--Catalogs.
Mitchell, W. O. (William Ormond), 1914-1998--Manuscripts--Catalogs.
University of Calgary. Libraries--Catalogs.
Princeton subject headings:
Archives--Alberta--Calgary--Catalogs.
Authors, Canadian--Archives--Catalogs.
Mitchell, W. O. (William Ormond), 1914---Archives--Catalogs.
University of Calgary. Libraries. Special Collections Division--Catalogs.