1970
Three Rivers Stadium opened July 16th
1971
US Steel Tower opened September 30th
1971
Pirates win The World Series
1972
Roberto Clemente died in a plane crash Dec 31st
1975
Steelers win the Superbowl Jan 12th
1976
Steelers win the Superbowl Jan 18th
1977
The Mattress Factory was founded
1977
The first Pittsburgh Three Rivers Regatta
1977
Birmingham Bridge opened Sept 2nd
1977
West View Park closed Sept 5th
1978
Steelers win the Superbowl Jan 15th
1979
Steelers win the Superbowl Jan 21st
1979
Pirates win The World Series