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Circular Slide Rule

During the 1920s William J. Powell led a small group of black air enthusiasts in Los Angeles. He established the Bessie Coleman Flying Club in 1929 and sponsored the first all-black air show on Labor Day 1931. As part of his effort to make aviation accessible to African American students, he taught classes on aeronautics at the Bessie Coleman Flying Club. This flight computer was among the equipment he used while teaching. Artist Unknown. (Photo by Heritage Art/Heritage Images via Getty Images)
During the 1920s William J. Powell led a small group of black air enthusiasts in Los Angeles. He established the Bessie Coleman Flying Club in 1929 and sponsored the first all-black air show on Labor Day 1931. As part of his effort to make aviation accessible to African American students, he taught classes on aeronautics at the Bessie Coleman Flying Club. This flight computer was among the equipment he used while teaching. Artist Unknown. (Photo by Heritage Art/Heritage Images via Getty Images)
Circular Slide Rule
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Credit:
Heritage Images / Contributor
Editorial #:
1338658891
Collection:
Hulton Archive
Date created:
January 01, 1920
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License type:
Rights-managed
Release info:
Not released.ÌýMore information
Source:
Hulton Archive
Object name:
2839966
Max file size:
4992 x 3328 px (16.64 x 11.09 in) - 300 dpi - 4 MB