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- Project Gutenberg
- Prehistoric peoples — Juvenile literature
Prehistoric peoples — Juvenile literature — Audiobooks
The Tree-Dwellers
by Katharine Elizabeth Dopp
Stories of the Cave People
by Mary Marcy
Days Before history
by H. R. (Harry Reginald) Hall
The First Days of Man, as Narrated Quite Simply for Young Readers
by Frederic Arnold Kummer