Conservation and Post War Rehabilitation. A Report prepared by the Guelph Conference on the Conservation of the Natural Resources of Ontario. Published February 1942. Price 10 cents. Cream coloured, stapled paper wraps (softcover) are moderately soiled and gently rubbed to extremities. “Chairman – Inter Department Committee on Conservation & Rehabilitation” is stamped to the top edge of the front wrap. Some marginalia and underlining in pencil. Wraps are faintly creased where it appears this 15 page Memorandum has been folded at some point in time. A single half page document (agenda?) is paper clipped in place at the center of the Memorandum with accompanying marks. The Ganaraska Region Conservation Authority (GRCA) was formed in 1946 and is one of the oldest such authorities in Ontario. In 1941, six organizations (listed in the Memorandum) met to form the Guelph Conference on the Conservation of the Natural Resources in Ontario, with a report issued in 1942 recommending an integrated resource management planning study of a watershed in Ontario. “A Report on the Ganaraska Watershed” by A.H. Richardson was published in 1944.