The official flag of Calgary features a cowboy hat and the letter "C" on a red field, with white strips on the top and bottom of the field. The flag was adopted in 1983 as a result of a contest. Gwin Clarke and Yvonne Fritz, a former Legislative Assembly of Alberta member, created the design. The previous design of the flag was a field of white, with a red vertical band on the left third. Within the red band was the city's coat of arms. The white portion of the flag featured the text "Calgary" with maple leaves of the Flag of Canada above and below the text.
Source: Wikipedia