Bert Wilson in the Rockies by Duffield, J. W.

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Bert Wilson on the Gridiron by Duffield, J. W.

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Bert Wilson at Panama by Duffield, J. W.

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Bert Wilson at the Wheel by Duffield, J. W.

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Bert Wilson's Fadeaway Ball by Duffield, J. W.

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Bert Wilson, Wireless Operator by Duffield, J. W.

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Bert Wilson, Marathon Winner by Duffield, J. W.

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Bert Wilson's Twin Cylinder Racer by Duffield, J. W.

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The Radio Boys Under the Sea; or, The Hunt for Sunken Treasure by Duffield, J. W.

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Radio Boys in the Secret Service; Or, Cast Away on an Iceberg by Duffield, J. W.

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Radio Boys in the Flying Service; or, Held For Ransom by Mexican Bandits by Duffield, J. W.

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The Radio Boys in the Thousand Islands; Or, The Yankee-Canadian Wireless Trail by Honeywell, Frank; Duffield, J. W. [Dubious author]

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