1942 Print Aeroembolism Dmitri Kessel Oxygen Mask Aviation Pilot Wartime FZ7 SPANISH4 It was destroyed in several

It was destroyed in several bombings throughout World War I

Goldman's Hair Color Restorer

vintage football

which could be adjusted by foot

"Portrait of a Princess

1942 Print Aeroembolism Dmitri Kessel Oxygen Mask Aviation Pilot Wartime FZ7 SPANISH4 It was destroyed in severalThis is an original 1942 halftone print of a pilot exercising on a bicycle with an oxygen mask on. The caption writes, "This prevents aeroembolism, an ailment analgous to the bends of deep sea divers, caused by the occurrence of nitrogen bubbles in the body at low atmospheric pressures above 30,000 feet. Breathing oxygen and exercising thirty minutes eliminates nitrogen, but combat pilots would rarely have time for such a ritual." Photography by