A Night at the Opera (film) DVD commentary. But this could not have occurred, because Sam Marx had died in 1933, during pre-production of "Duck Soup", two years before "A Night at the Opera" was released. The rumor arose because Frenchy had had such a cameo appearance in the Marx Brothers' earlier "Monkey Business". There is, however, a reference to the Marx Brothers' mother, Minnie Marx, during the stateroom scene, in which a woman asks, "Is my Aunt Minnie in here?" Part of the concept of casting the Marx Brothers as stowaways on a ship was recycled from "Monkey Business". As Groucho's and Margaret Dumont's characters
Ocean liner ocean liner in service was , built in 2003–04, used for both point-to-point line voyages and for cruises. Four ocean liners that were made before World War II survive today as they have been preserved as museums, and hotels. The Japanese ocean liner "Hikawa Maru", has been preserved in Naka-ku, Yokohama, Japan, as a museum ship, since 1961. was preserved in 1967 after her retirement, and became a museum/hotel in Long Beach, California. In the 1970s, was also preserved, and now resides in Bristol, England as another museum. The latest ship to undergo preservation is , which is to become