Philadelphia Grand Opera Company ended in 1921.
Philadelphia Civic Opera Company ended in 1930.
Philadelphia Lyric Opera Company ended in 1974.
Philadelphia Civic Grand Opera Company ended in 1955.
Philadelphia La Scala Opera Company ended in 1954.
Philadelphia Opera Company was created in 1938.
Opera Company of Philadelphia was created in 1975.
Philadelphia Grand Opera Company was created in 1926.
Philadelphia Civic Opera Company was created in 1924.
Philadelphia Lyric Opera Company was created in 1958.
Philadelphia Civic Grand Opera Company was created in 1950.
Philadelphia La Scala Opera Company was created in 1925.