File:JC Mars, pilot, readying the dirigible balloon for flight, Alaska Yukon Pacific Exposition, Seattle, June 1909 (AYP 577).jpeg
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JC_Mars,_pilot,_readying_the_dirigible_balloon_for_flight,_Alaska_Yukon_Pacific_Exposition,_Seattle,_June_1909_(AYP_577).jpeg (768 × 563 pixels, file size: 100 KB, MIME type: image/jpeg)