Curtiss Robin with OX-5 motor that Lt. PH Spencer flew to 17,500 feet to set altitude record, at East Boston
Digital Commonwealth — Boston Public Library

Curtiss Robin with OX-5 motor that Lt. PH Spencer flew to 17,500 feet to set altitude record, at East Boston

Jones, Leslie, 1886-1967 · June 2, 1929

CC0 — Public Domain
Digital Commonwealth — Boston Public Library
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