It's Ancient History!
From Author Wars - https://authorwars.com/books/its-ancient-history-1527087.html
Overview:
- Title: It's Ancient History!
- Author: Ellie O'Ryan
- Year: 2011
- Type: Novels
- Series: Phineas and Ferb
- Number in Series: 8
Editions/Publications:
- 2011 . It's Ancient History! (2011, Ellie O'Ryan, Disney Press, ISBN-10: 9781423127420, $4.99, 109 pages, Paperback, Novel)