Lawrance Aero Engine Company
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Lawrance Aero Engine Company was an American aircraft engine manufacturer. Founded by engine pioneer Charles Lawrance, it designed one of the first successful air-cooled radial engines. It existed for
Lawrance L-3
Sikorsky S-33 Messenger
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The Sikorsky S-33 Messenger was an American two-seat sesquiplane designed and built by the Sikorsky Manufacturing Corporation in 1925.
