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Donald A. Hall Estate Collection

Underside of the Hall X-1 Wing (1936)

A close-up, low-angle view showing the underside of an aircraft wing, focusing on a curved metal handling bar and the structural ribs beneath the fabric.
Underside of the Hall X-1 Wing (1936) · Donald A. Hall Estate Collection

A highly technical engineering shot showing the underpart of the wing on the Hall XPTBH-2 (Hall X-1) prototype, designed by Donald A. Hall Sr. in 1936.