Beecham Opera Company was created in 1915.
Beecham - pharmaceutical company - was created in 1859.
American Opera Company ended in 1930.
Chicago Opera Company ended in 1946.
Boston Opera Company ended in 1915.
Berkshire Opera Company ended in 2009.
Philadelphia Opera Company ended in 1910.
Opera Company of Boston ended in 1990.
Aborn Opera Company ended in 1922.
San Carlo Opera Company ended in 1909.
Chicago City Opera Company ended in 1939.
Philadelphia Grand Opera Company ended in 1921.