The Twenty-One Balloons

From Author Wars - https://authorwars.com/books/the-twenty-one-balloons-1425370.html

Overview:

Title: The Twenty-One Balloons
Author: William Pène du Bois
Year: 1975
Type: Cover Art

Editions/Publications:

Unknown. The Twenty-One Balloons (Unknown, William Pène du Bois, Dell Yearling, $1.25, 180 pages, Trade Paperback, Novel)