RULE, Peter Leitch (1913-1964), active in Edmonton, Alta. and a partner in the firm of Rule, Wynn & Rule. He was the son of Peter Rule Sr., a staff architect and building inspector for Alberta Government Telephones. Born in Edmonton in 1913, he was the younger brother of John U. Rule, and was likely inspired by his father to take up the study of architecture. He enrolled in the School of Architecture at the Univ. of Alberta in Edmonton where his older brother had also studied the profession. Peter L. graduated there in 1939, and worked briefly in the office of John Martland, and the following year he was invited to become a partner in the young firm of Rule & Wynn, established in 1938 (R.A.I.C. Journal, xvii, July 1940, 120).
Their practise was remarkably successful, and they were one of first architectural firms in western Canada to introduce a progressive modernist style to institutional, commercial and industrial buildings in cities and towns across Alberta (see list of works for Rule, Wynn & Rule in the entry under John U. Rule). Peter L. Rule was elected as a Fellow of the Royal Architectural Inst. of Canada in 1963, and later died in Nelson, B.C. on 2 May 1964 (obituary Calgary Herald, 2 May 1964, 21; Edmonton Journal, 4 May 1964, 28; obit. R.A.I.C. Journal, xli, July 1964, 12; inf. Alberta Assoc. of Architects). The Canadian Architectural Archives at the Univ. of Calgary holds an extensive collection of nearly 6,000 original architectural drawings prepared by the firm of Rule, Wynn & Rule from 1938 onward. A complete Finding Aid and Guide to the collection was published by the University of Calgary Press in 1997.