2.2 m of textual records. Series consists of incoming and copies of outgoing correspondence. Series is arranged alphabetically by correspondant or subject. 6 m of published materials. 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.
2.16 m of textual records. Series consists of correspondence, minutes, printed material, programs, reports, publications, and lecture and course notes pertaining to the Geological Society of America, the Royal Society of Canada, the area of Museums in Vancouver, and the Canadian Department of Mines Geological Survey. 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 six file drawers of index cards generated by M.Y. Williams in the course of his research.