Vintage original press photo, 7x9", b&w. Press release on the reverse in entitled: "I'll return 'Russ Visit' Says Mattern". Announces famous pilot Mattern's intention to attempt a California to Russia flight as a return gesture for the three Soviet transpolar flyers arriving at San Francisco. Mattern is shown with United Airlines pilot Kiessig (rt.). Press release date is 6/23/1937. Excellent.