Herman Bing as "Proprietor" and Greta Meyer as "Proprietor's Wife" are in studio records/casting call lists as cast members, but they did not appear or were not identifiable in the movie.
Two lines in the end cast list credits are subject to two different interpretations: "Children's Band ... Leonard Kibrick" and "Walter and George Weidler." The IMDb cast lists three actors: Leonard Kibrick Warner, Walter Weidler and George Weidler. However, The AFI Catalogue lists four actors: Leonard Kibrick, Warner Weidler, Walter Weidler and George Weidler.