This page from Lt. W.C. Bancroft's personal flight logbook documents a series of July 1951 flights in the Martin PBM-5 Mariner, a twin-engine patrol flying boat. The recorded route -- Alameda, California, to Ford Island, Hawaii, to Johnston Atoll, and on to Kwajalein in the Marshall Islands -- traces the long-range Pacific transit corridor used by Navy patrol squadrons to reposition aircraft and crews across the theater during the Korean War buildup. Logbooks such as this one serve as irreplaceable primary sources, recording individual airmen's service in precise, dated detail long before official unit histories are compiled. Project: 218132