Duffield, J. W.
Books
- Bert Wilson at Panama
- Bert Wilson at the Wheel
- Bert Wilson in the Rockies
- Bert Wilson, Marathon Winner
- Bert Wilson on the Gridiron
- Bert Wilson's Fadeaway Ball
- Bert Wilson's Twin Cylinder Racer
- Bert Wilson, Wireless Operator
- Radio Boys in the Flying Service; or, Held For Ransom by Mexican Bandits
- Radio Boys in the Secret Service; Or, Cast Away on an Iceberg
- The Radio Boys Under the Sea; or, The Hunt for Sunken Treasure