From the Howard Cannon Photograph Collection (PH-00192). The men are studying a "Report of the Nevada Committee for the Utilization of State Resources to Meet National Needs."
Description printed on photograph's accompanying strip of paper: "Next stop-- Moscow! Le Bourget, France---- After making minor repairs, Howard Hughes and his companions took off from Le Bourget, to complete their record-smashing circuit of the globe in 3 days and 19 hours. The photo shows the Hughes plane, 'World's Fair, 1939,' propellers whirling, just before the takeoff for Moscow, second leg of the world flight."