Doodlebugs, half tractor, half car. History of these historic machines.
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The Doodlebug - Borculo, Michigan
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Doodlebugs.
The Doodlebugs. A word and picture history
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The Doodle Bug
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1928 Archives – Automotive American %
Older model Doodlebug information O Gauge Railroading On Line Forum
The Doodle Bug