George Chandler was in studio records/casting call lists as a waiter, but he was not seen in the movie.
Jerry Maren donned a mask and a monicle to appear as Charlie McCarthy whenever he moved about.
Fibber's comment about "the local 400" refers to the supposed social elite of New York City in the late 19th century. The term was coined by Ward McAllister, based on the number of people that supposedly could fit in the ballroom of Mrs William Backhouse Astor.
The poem recited by Abigal Huppington is "Hiawatha" by Henry Wadsworth Longfellow.