The P-26 "Peashooter" was the first all-metal, single-wing fighter to be used by the United States Air Corps, and deliveries by Boeing began early in 1934. The first models were painted the standard olive-drab with no squadron markings, but later in the year, the Air Corps changed the colors to blue, with yellow wings and empennage, by this time, the Boeing company ahd firmly established itself as a major airframe manufacturer with the famed "Monomail" transport, the P-12 fighter of the later twenties, and the first all-metal 247 Transport, which heralded the coming of the air-transport age just prior to WWII. Boeing took pride in displaying its products against a backdrop of awe-inspiring Mount Rainier, the 14,410' peak which dominates the western Washington landscape. In this painting, the hulk of Mount Adams raises its 12,3000' summit to the southeast on the horizon. In the earlier days of flying, the slopes of the west's major peaks affered considerable challenge, and were especially valuable to testing of aircraft of limited ceiling capabilities. Over the years, Mount Rainier had become a familiar part of the Boeing company's photographic symbology.