^Census entry for Frank Bruce and family. Son-in-law Jack Warner, age 26, employed by the Brooklyn ball club. Census Place: Mount Vernon, Jefferson, Illinois; Roll: 521; Page: 10B; Enumeration District: 0017; Image: 732.0; FHL microfilm: 2340256. Ancestry.com. 1930 United States Federal Census [database on-line].
لمعانٍ أخرى، طالع جاك وارنر (توضيح).
