- Listenly
- Public Library
- Project Gutenberg
- Radio operators — Juvenile fiction
Radio operators — Juvenile fiction — Audiobooks
The Wireless Operator—With the U. S. Coast Guard
by Lewis E. (Lewis Edwin) Theiss
The Young Wireless Operator—With the Oyster Fleet
by Lewis E. (Lewis Edwin) Theiss
The Young Wireless Operator—As a Fire Patrol
by Lewis E. (Lewis Edwin) Theiss
The Young Wireless Operator—Afloat
by Lewis E. (Lewis Edwin) Theiss