Fonds consists of materials which document and reflect Charles Humphries' involvement with the Historic Sites and Monuments Board, and the Provincial Heritage Advisory Board. The materials include correspondence, reports, minutes (published and unpublished), and agenda papers (published and unpublished). Research materials include typed notes from newspaper articles, photocopies of newspaper articles, papers, transcripts and photocopies from various Canadian and British archives, and copies of death and birth certificates. Fonds also includes some biographical materials. Fonds consists of the following seven series: Historic Sites and Monuments Board of Canada, British Columbia Provincial Heritage Advisory Board, Biographical, Research Materials, Teaching Materials, Correspondence, and Published Materials.

The fonds consists of photocopied research material relating the following individuals - Clifford Sifton, George Foster, Robert Borden, R.B. Bennett, W.S. Fielding, T.A. Crerar, A.K. Cameron and Charles A. Dunning. Also included are minutes, agenda papers and reports from the Historic Sites and Monuments Board of Canada on which Prang served from 1973 to 1979.