Bugs' Warren has all the very latest postwar furnishings, including a radio. Television was still a few years away from entering the U. S. domestic mainstream.
Bugs quotes a mismatch from the 17th century poet, Robert Lovelace, who wrote in "To Althea, from Prison" 'Stone walls do not a prison make, nor iron bars a cage.'
The opening roustabout scene is reminiscent of the Disney film "Dumbo," released in 1941.