Books by Duffield, J. W.

Bert Wilson on the Gridiron

Bert Wilson's Twin Cylinder Racer

Bert Wilson at the Wheel

Bert Wilson in the Rockies

The Radio Boys Under the Sea; or, The Hunt for Sunken Treasure

Bert Wilson, Wireless Operator

Bert Wilson, Marathon Winner

The Radio Boys in the Thousand Islands; Or, The Yankee-Canadian Wireless Trail

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

Bert Wilson at Panama

Bert Wilson's Fadeaway Ball