Beech AT-11 in agricultural sprayer configuration. Ex USAF 43-10384, converted to civil in early 1958. Was still in service as a sprayer by 2018. Photo by Robert O'Dell.

KNILM Dutch East Indies version with the double tail. The experimental "X" prefix was required by the CAA (now FAA) for company flight tests in the US before delivery. Photo by Howard Levy.

Photographer unknown.

This photo is probably an official Army Air Corps shot. Print obtained from Pete Bowers.

The Fokker C-2 is a variant of the successful Fokker F.VIIa-3m, with a larger fuselage and upgraded engines. Three C-2s were delivered to the United States Army Air Corps in 1927, serialed 26-202 to 26-204. The first of them, 26-202 as shown here, was modified to a long-range version and fitted with a larger wing (21.7m instead of 19.2m). It was reportedly named "Bird of Paradise" (but apparently not carried) and used to make the first transpacific flight, 3860 km (2,400 miles) from Oakland to Honululu, on 1 June 1927. Photographer unknown.

Kingsford Smith's Southern Cross photographed in a hangar at an unconfirmed location, most likely at Oakland. In three epic flights spread over two years, Southern Cross and Kingsford Smith circumnavigated the globe over Australia. His trans-Pacific flight took off from Oakland in May 1928 and he returned there via London and New York in July 1930. Photographer unknown.

Starting its engines while parked near Oakland's Hangar No.1 and Hangar No.2. Registration is uncertain. Must be either NC333N or NC334N, and the former reg appears to show on the fin. Photographer unknown.

Southern Cross at an unknown location, presumably in California, shortly before starting its record flight from Oakland, CA to Australia. Later became G-AUSU, then VH-USU. Currently displayed at the Sir Charles Kingsford Smith Memorial in Brisbane, painted in its original markings as seen here. Photographer unknown.

Martin JRM-2 "Caroline Mars" moored at NAS Alameda. Photo by Pete Bowers.

Leaving NAS Alameda to take off in the Bay. US Navy photo.

The "Caribbean Sea Tradewind" leaving NAS Alameda. Photo by Peter M. Bowers.

Photo by Harold Martin.

Aircraft acquired by the Ford Motor Company in Feb 1948 and converted for executive use. Sold to the French military in 1952, fate unknown. Photo by Bill Balogh.

This aircraft is now preserved in the excellent New England Air Museum. Photo by Logan Coombs.