September 21, 1974 - BTO release the single "You Ain't Seen Nothin' Yet."
The song was recorded by Randy as a joke for his brother Gary - the stutter in the lyrics mimicked the stutter Gary had when he was young. When another song was dropped from the album, record execs wanted "You Ain't Seen Nothin' Yet" to replace it. Bachman tried to record the song without the stutter, but it wouldn't work so the original version was used.
Bachman was said to have been embarrassed when it started getting airplay and initially refused to allow it to be released as a single. He eventually gave in and the song became their only U.S. number one hit.
September 21, 1976 - The Local Government District of Leaf Rapids becomes the Town of Leaf Rapids. it was built in 1971 to serve the Ruttan Mine which closed in 2002.
September 21, 1951 - The Pinawa Generating Station is retired to allow for a stronger water flow at the upgraded Seven Sisters Generating Station.
September 21, 1999 - Gary Doer is elected Premier of Manitoba ending Gary Filmon’s eleven year reign. First elected as an MLA in 1986, he stepped down in 2009 and was appointed Canadian Ambassador to the United States of America.
September 21, 1995 - The 'Toonie' becomes part of Canada’s currency. See this CBC News report.
September 21, 1935 - The Shanghai Chop Suey House opens at 224 King Street. In 1941 it moved to the Coronation Block. The restaurant closed on January 9, 2011 and the building demolished in 2012.
September 21, 1946 - Three people are killed in a train wreck outside Carberry, Manitoba.