The Bellringer 1941 01 (PDF)

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Vol. 1 No. 2
Articles inside this issue:
Army Air Corps Concludes Tests of P-39 Pursuit Plane
From Two Rooms in ’35 to 675,000 Square Feet
Why an Extension Drive Shaft? ( Airacobra )
Here is G. W. “Jerry” Comstock, Chief Dispatcher
Structual Testing