Series consists of C.V's, biographical notes, clippings and articles about M.Y. Williams, miscellaneous financial records, and early educational records.

Series consists of six file drawers of index cards generated by M.Y. Williams in his research and one box of index cards documenting his map collection.

Series consists of incoming and copies of outgoing correspondence. Series is arranged alphabetically by correspondent or subject.

Series consists of extensive research notes, draft manuscripts and source materials used by Williams in conducting family history research. Copies of "The Bowerman Family, 1379 to the Present: English, American, Canadian" [CS 71 B69 W4] and "The Samuel Williams, Jemima Platt Family" [CS 90 W54] are available in Special Collections as well as in the fonds. Series also includes three postcard albums collected by M.Y. Williams' mother, Carrie Williams and numerous photographs.

Series consists of field notebooks created by Williams or others who worked on projects he was involved. Series is arranged chronologically by date of creation. In addition, notes briefly explaining the creation of the notebooks have been added.

Series consists of manuscripts, research materials and correspondence relating to M.Y. William's publications and reports.

Items in file 13-3a "Birds of Hong Kong" were transferred to the University Archives by David Mattison of the British Columbia Archives.

Series consists of geographical maps pertaining to various regions, particularly within Canada. Series is arranged alphabetically by country and, within Canada, by province.

Series consists of various published materials in the areas of geography and literature.

Series consists of correspondence, minutes, printed material, programs, reports, publications, and lecture and course notes about the Geological Society of America, the Royal Society of Canada, Museums in Vancouver, and the Canadian Department of Mines Geological Survey.

Fonds consists of biographical notes, clippings, articles, early educational records, research notes, draft manuscripts, field notebooks, reports, publications, correspondence, lecture and course notes, maps, photographic prints, and slides pertaining to M.Y. Williams' professional and personal activities.

Series consists of photographs of M.Y. Williams' family and work.

An inventory of the slides is available on the last two pages of the finding aid.

Series consists of copies of all of M.Y. William's publications which formed part of the papers. As established by Williams' bibliography, the publications have been divided into the following categories: "Geology," "Geography," and "Ornithology and Zoology."

Series consists of copies of reports written by M.Y. Williams. Series is arranged chronologically.

Series consists of reprints gathered by M.Y. Williams, reflecting his broad interest in geology and natural history. Series is arranged alphabetically by author and, on rare occasions, by subject.