The Stone Age, by Clement Wood 79172 [Subtitle: Little Blue Book no. 481] [Author: Clement Wood] [Link: https://www.gutenberg.org/ebooks/79172]
Thanks to Tim Miller, Jack Janssen and the Online Distributed Proofreading Team at https://www.pgdp.net (This file was produced from images generously made available by The Internet Archive) Regards, Jacqueline
