Clarence "Kelly" Johnson Electra test

Clarence "Kelly" Johnson testing a model of the Lockheed L-10 Electra in the University of Michigan wind tunnel in 1933

Clarence "Kelly" Johnson testing a model of the Lockheed L-10 Electra in the University of Michigan wind tunnel in 1933

Keywords: clarence johnson,kelly johnson, electra,lockheed,wind tunnel,1933

PD icon. This image is public domain

This image is in the Public Domain, and may be re-used

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