Fonds consists of records created and used by Segger in his activities with the B.C. Heritage Trust and Advisory Board, the Heritage Canada Foundation, the City of Victoria Heritage Advisory Committee, the Esquimalt and Nanaimo Railway Committee, and with projects by University of Victoria students in architecture history. Fonds includes summaries of heritage preservation projects, minutes, correspondence, architectural drawings, newsclippings, policy statements, proposals for scholarships and building projects, newsletters, conference material, zoning information, flow charts, membership surveys, and architectural history projects undertaken by Segger's students; records of Segger's books and articles about Samuel Maclure; and, copies of photographs of houses designed by Maclure.
Fonds includes the following series: theatre scrapbooks, 1941-1991; biographical material, 1939-1994; programs and printed material, ca. 1938-1986; photograph series, 1947- ca.1987; audio-visual media series, 1946-ca.1992; and theatre poster series, 1950-1978.