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 slide rule was among the equipment he used while teaching. Artist Keuffel & Esser Co.. (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 slide rule was among the equipment he used while teaching. Artist Keuffel & Esser Co.. (Photo by Heritage Art/Heritage Images via Getty Images)
Slide Rule
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來源:
Heritage Images / Contributor
編輯性內容編號：
1338658888
圖像集:
Hulton Archive
建立日期：
1920年01月01日
上傳日期：
授權類型：
權利管理
發佈資訊:
無許可授權 更多資料
來源：
Hulton Archive
物件名稱：
2839965
最大檔案大小：
4988 x 2956 像素 (42.23 x 25.03 cm) - 300 dpi - 4 MB