Fonds consists of newspapers, photographs, financials, and personal documents relating to the professional and private lives of Carl Mantz, including his wife Elizabeth Gibson. Included in the fonds are records pertaining to the purchase and maintenance of the Whitby Weekly News building, correspondence and letters regarding his enlistment in the RCAF, programs and background information for the Ten Centuries concerts, and the meeting minutes for his initiatives concerning Whitby senior citizens. Of particular interest are the newspaper photographs which represent various events, people, and places of Whitby in the 1950s and 1960s. The fonds is composed of the following series: Elizabeth G. Gibson records, 1969; Personal records, 1931-1980; Community Involvement records, 1962-1975; Financial records, 1938-1971; Clippings; and Photograph 1950s-1960s.

Fonds consists of six scrapbooks pertaining to the 1957-58 season for the Whitby Dunlops hockey team. Scrapbooks contain newspaper clippings, magazine articles, and some handwritten observations by Ken. Scrapbook five follows the team's 1958 trip to Oslo, Norway to compete in the World Ice Hockey Championship which they go on to would win. Each scrapbook contains a table of contents at the beginning.