Rule Wynn and Rule was an architectural firm founded in Edmonton in 1938 by John Ulric Rule (1904-1978) and Gordon Kenneth Wynn (1912-1994). They established the company in response to a need for jobs for architects in Edmonton. John Rule’s brother, Peter Leitch Rule (1913-1964), joined the company two years after he graduated from the University of Alberta, leading to the company’s name becoming Rule Wynn and Rule (1938). As the economy improved near the end of the 1930s, jobs slowly began to trickle in. Eventually, the company was contracted by funeral director Don McGarvey to build a funeral home. This would be the first of many contracts for the company.
During the Second World War, the company was managed by the Rule siblings’ father, Peter Sr., who helped run the company while his sons and Gordon Wynn assisted in the war effort. Despite Peter Sr. not being a trained architect, he was given an honorary certificate by the Alberta Association of Architects, allowing him to manage the company without the other architects. When the war ended, Peter Rule was sent to work in the Calgary branch of the business, leading to more contracts in southern Alberta. He would oversee work in the Calgary branch until he passed away from a heart attack in 1964.
As the company continued to thrive, it expanded its partnership a year before Peter’s untimely demise. The Edmonton and Calgary branches witnessed these changes, with the Edmonton branch welcoming Gordon Forbes (1912- 2004), David George Lord (1917- 1990), and Heinz Feldberg (1928-2018). This expansion changed the company's name, now known as Rule Wynn Forbes Lord & Partners (1963), but this would change again after John Rule retired in 1966, leading the company to be known as Wynn Forbes Lord and Partners (1965), then Wynn Forbes Lord Feldberg Schmidt. This new partnership name reflected the addition of Sieghard Schmidt (1933-2005), who had joined the staff in 1964.
In 1973, Gordon Wynn officially retired from active practice, which led the partnership to change again, becoming Forbes Lord Feldberg Schmidt Croll (1972). This reflected the addition of Norman H. Croll, who joined the office in 1967 after searching for a change of pace from his practice in Wembley, England. In 1973, he would interview future company partner Craig J. B. Henderson, who had applied to work with the company after seeing an ad in the British Architectural Journal. Henderson became a company partner in 1981.
Across Alberta and other provinces, the company became known for the buildings they helped design and build, with many praised for their classic, modernist design. The firm specialized in building and consulting on commercial and residential buildings for over 70 years.