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CAM-30S4 First Night-Time Flight%u2014%u2014April 1, 1930%u2014%u2014Evansville to Atlanta, GA.Interstate Airlines, Inc.%u2014%u2014Durward Ledbetter & Joe Hammer, pilots.This was the first night-time flight for southbound CAM-30S4. Addressee, Lee Gilbert, was New York stamp dealer, and one-time owner of an inverted Jenny air-mail stamp. Signed by both pilots, information cards below.

