When was the lager that used to be brewed in the Latrobe Brewery launched ?
1939
Title: Creemore Springs
Passage: Creemore Springs is a brewery in Creemore, Ontario, Canada, which first opened in 1987.  It was founded by John Wiggins and initially brewed mainstream lagers, expanding later into a premium lager and lager brewed with darker malts, brewed with fire under the kettle.  In 2005, it was acquired by Molson, a subsidiary of the seventh largest brewery corporation in the world, Molson Coors Brewing Company.
Title: Rolling Rock
Passage: Rolling Rock is a 4.4% abv American lager launched in 1939 by Eric John Franco & Co.  Although founded as a local beer in Rhinebeck, New York, it was marketed aggressively and eventually became a national product.  The brand was sold to Anheuser-Busch of St. Louis, Missouri, in mid-2006, which transferred brewing operations to New Jersey.
Title: Iron City Brewing Company
Passage: The Iron City Brewing Company (also known as the Pittsburgh Brewing Company) is a beer company that until August 2009 had been located in the Lawrenceville neighborhood of Pittsburgh, Pennsylvania, United States.  On June 11, 2009, it was reported that the brewery was "moving" to Latrobe, Pennsylvania.  That move was recently completed and Iron City is now produced in the Latrobe Brewery that was once used to produce Rolling Rock.
Iron City Brewing Company Rolling Rock