September 4: First Labour Day Classic; UMFM on the air; Mantrap opens.

September 4, 1998 – At 6:00 p.m. CJUM-FM (UMFM) signs on the air.

September 4, 1950 - The Saskatchewan Roughriders beat the visiting Blue Bombers 17 - 2 in the first Labour Day Classic between the two teams.

The Bombers were missing four starters from their lineup, one due to an ill spouse and the others due to injury. Of thirteen incomplete passes credited to quarterback 'Indian Jack' Jacobs, nine were dropped by receivers. Jacobs accounted for all of the Bombers' scoring with two successful field goals.

The Labour Day game was a success as there was an over-capacity crown of more than 9,000 at Taylor Field.

September 4, 1926 - Mantrap, a Hollywood movie partially shot in Manitoba, opens at the Capitol Theatre.