Washington National Airport, July or August 1964. The Douglas DC-6 was arguably the last word in piston-engined airline travel. Built in 1948, this airframe's days in first-line service were numbered when this late afternoon image was taken. Immaculately maintained, the ground crew probably washed the exhaust soot from the engine nacelles every night. The United Airlines livery was both elegant and functional: the underside was left in bare aluminum as a concession to the grit that would inevitably score the surface. Scanned slide from the Frank Burch photo collection. | Click image for Comments. | Home | Browse All Photos