Infocom Documentation Project: PDF file of scanned originial game manual.
Infocom Homepage: Ballyhoo: Description, box art, release information, game statistics, and packaging details.
MobyGames: Ballyhoo: User reviews, credits, box image, screenshot, trivia, and other information.
New Zork Times: Now Introducing... Ballyhoo: Text of game announcement from Infocom's newsletter.
Review by Matthew Murray: Capsule review. "An interesting game, but certainly not one of Infocom's more intense or defined."
The Infocom Gallery: Ballyhoo: High quality scans of box, circus program, ticket, balloon, and trade card.