- Listenly
- Public Library
- Project Gutenberg
- Printing — History -- Origin and antecedents
Printing — History -- Origin and antecedents — Audiobooks
The Invention of Printing.
by Theodore Low De Vinne
Early Printed Books
by E. Gordon (Edward Gordon) Duff
Printing and the Renaissance
by John Rothwell Slater
Early Typography
by William Skeen
The Invention of Typography
by Frederick W. (Frederick William) Hamilton