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CAM-24S2%u2014%u2014July 31, 1928%u2014%u2014Indianapolis to Cleveland, OH%u2014%u2014Embry-Riddle Co. This was the last flight of this route before the Air Mail postal rate was reduced from 10%u00a2 to 5%u00a2.Cachet by addressee, Herbert H. Griffin, who founded the Cleveland Air Mail Society in 1929, and was elected President of the American Air Mail Society in 1931.
