prattwhitneyr1340wasp

Former Secretary of the Treasury William Gibbs McAdoo in front of his private Lockheed Vega 5A Executive Special (NC309H; c/n 80), named "The Blue Streak." See: en.wikipedia.org/wiki/William_Gibbs_McAdoo

As per the December 1929 issue of the journal US Air Services*, this photo features three Loening OL-8A aircraft of the Alaskan Aerial Survey on the government dock at Juneau, Alaska. From left to right they are: The aircraft designated No. "2," BuNo A-8078, named Ketchikan; the aircraft designated No. "4", BuNo A-8076, named Sitka; and the aircraft designated No. "1," BuNo A-8072, named Juneau. The fourth aircraft, designated No. "3," BuNo A-8079, and named Petersburg, took the photo. The Lapwing-class minesweeper USS Gannet (AM-41), also captured in the photo, performed the role of aircraft tender for the survey expedition, and would lift the Loening OL-8A's and place them upon the dock after the completion of each sortie. *Grinstead, Frances "Air Mapping in Alaska with Loening Amphibians." U.S. Air Services, Vol. XIV, No. 12, December 1929, pp. 43-46.

The ill-fated sole Ford 4-AT-C NC7862 (c/n 4-AT-47) built for Sunbeam Air Transport. This aircraft would crash and be destroyed approximately 10 miles north of Spur, Texas. The December 1, 1928 crash killed all five persons aboard, including the President of Sunbeam Air Transport, Homer D. Ballard. The 4-AT-C was unusual in that it used two types of engines, consisting of a single 450 horsepower Pratt & Whitney R-1340 Wasp radial in the nose, and two 220 horsepower Wright J-5 Whirlwind radials under the wings. See: aviation-safety.net/database/record.php?id=19281201-1 Here is a photo of the crash in the SDASM's collection: