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This collection consists of miscellaneous ledgers and legal documents of businesses, doctors, etc. in Peterborough, surrounding counties and areas in southern Ontario.

This collection consists of texts of papers and speeches written by William Sansome Tucker, D.Sc., A.M.I.E.E. in his particular area of expertise-sound phenomena-as well as other topics. Also included are letters patent, photographic and diagram illustrations as well as a few tear-sheets from periodicals about his work. There are also two or three papers by Dr. Tucker's colleagues.

This collection consists of six published articles and booklets relating to Mary Northway, W.E. Blatz, the Brora Centre and child psychology. It also consists of two photographs, one of Taylor Statten at Camp Ahmek in 1929, and one of Camp Ahmek council members in 1923, with accompanying key to names. Also included is a share certificate issued to Marian Gibson by John Northway and Son, Limited, and 1982 reminiscences of Mary Northway of her days at Glen Bernard Camp.

This collection consists of a photograph of John R. Marshall, possibly in his late 30s or early 40s, and newspaper clipping memorials to Marshall at the time of his death in April 1952.