The prototype Patrician outside the Keystone factory in Bristol, Pennsylvania, November 1928.

Re-fuelling the prototype, some time before the fire on November 21, 1928.

Loading baggage for the demonstration flight to the West Coast

Preparing to leave for the West Coast, February 4, 1929. Left to right: C Talbot Porter, Edgar Gott, Captain St Clair Street; Oliver Klaxton; Charles Koch.

The 33 showgirls who took part in the Patrician's unofficial record for passengers carried, in front of the aircraft in Los Angeles on the West Coast tour.

The K-78D Patrician at the Second Annual International Aircraft Exposition in St Louis, Missouri, in February 1930.

Prototype Patrician under construction.

The revised rudder assembly common to the second and third Patricians.

In the centre, wearing a leather flying suit, is Kenneth Fraser, Keystone test pilot for the first flight. C Talbot Porter, Keystone's Chief Engineer, stands third from right, and next to him, holding a movie camera, is Edgar Gott, Keystone's president. To Gott's left stands Lt Edwin McReynolds, official observer for the USAAC, who made the first flight with Fraser. Clarence Chamberlain, who flew the Atlantic after Lindbergh, stands next to Fraser, wearing a white flying helmet. On the far left stands Charles Koch, Keystone's Project Engineer, who managed the design and construction of the Patrician.

The prototype Patrician on take-off.

The rebuilt Patrician prototype in flight over New Jersey in early 1929.

The Patrician in the markings of Colonial Air Transport during its brief trial service trial on the Boston-New York route.

Revised K-78D Patrician in the form of the third aircraft NC10N.

Keystone was quick to use the Patrician's service with Colonial, brief though it was, in its advertising campaign.

The Patrician's main cabin, looking forward.

The Patrician's cockpit, showing the single control wheel that could be swung over to the co-pilot's position.

Damage to the prototype's rear fuselage after the emergency landing in Boston.

Marketing brochure for the Patrician.