Underoos - Superman - Cleveland Public Library, Underoos (c…
Superman collection arrives, will become heart of a Superman exhibit
Captain Underpants: The First Epic Movie (2017) - IMDb
Superman: 'From Cleveland to Krypton' exhibit unveiled at main branch of Cleveland Public Library
The Adventures of Captain Underpants by Dav Pilkey: A Children's Book – TheBookBundler
Hot Pants and Spandex Suits: Gender Representation in American Superhero Comic Books by Esther De Dauw, Paperback
All-Star Superman by Grant Morrison
DC Histories: Cleveland
The Superman Homecoming: The Heritage of Ohio's Own Superhero – Cleveland Public Library
Made in Cleveland: Superman may be the 'Man of Steel,' but he has Rust Belt roots - Roadtrippers
Where's Superman? 10 Funny Photos of Superman Hanging Out at the Cleveland Public Library, Cleveland