- Listenly
- Public Library
- Project Gutenberg
- Locomotives — Handbooks, manuals, etc.
Locomotives — Handbooks, manuals, etc. — Audiobooks
Locomotive Engine Running and Management
by Angus Sinclair
The Traveling Engineers' Association to Improve the Locomotive Engine Service of American Railroads
by Traveling Engineers' Association
How to Become an Engineer
by Frank W. Doughty