Beecham Opera Company ended in 1920.
Beecham - pharmaceutical company - was created in 1859.
Beecham's Pills was created in 1842.
American Opera Company was created in 1937.
Canadian Opera Company was created in 1950.
Chicago Opera Company was created in 1940.
Birmingham Opera Company was created in 1987.
Boston Opera Company was created in 1908.
Lancaster Opera Company was created in 1951.
Century Opera Company was created in 1913.
Berkshire Opera Company was created in 1962.
Philadelphia Opera Company was created in 1938.