Chicago Civic Opera was created in 1922.
Philadelphia Civic Opera Company ended in 1930.
Philadelphia Civic Grand Opera Company ended in 1955.
Chicago Opera Company ended in 1946.
Chicago Opera Association ended in 1921.
Chicago City Opera Company ended in 1939.
Chicago Grand Opera Company ended in 1914.
Children's Civic Light Opera was created in 1987.
Philadelphia Civic Opera Company was created in 1924.
Los Angeles Civic Light Opera was created in 1938.
Philadelphia Civic Grand Opera Company was created in 1950.
Chicago Opera Theater was created in 1974.