Two commemorative covers, both commemorating “First to fly ‘blind’ relying solely on instruments,” one with a stamped cachet honoring the first anniversary of Interstate Airlines (1929), the other with a stamped cachet honoring the dedication of the Goshen Municipal Airport (1929). Both signed in fountain pen, “J. H. Doolittle.” Scattered light toning and soiling, and collector’s stamps to reverse of both, as well as an affixed caption and fingerprint to one, otherwise fine condition. RRAuction COA.