Also known as a Ryan Flamingo. Was flown by Jimmie Angel who discovered the world's highest waterfall at Churun Meru in Venezuela (named Angel Falls after him) in 1933. He returned in 1937 with his wife and two passengers and landed on Auyantepui, a table mountain, where the plane nosed into the marshy ground. The four made their way back to civilization in 11 days, but it remained there for 33 years until the Venezuelan Air Force recovered and restored it. It is preserved as a national monument at Ciudad Bolivar Airport. Looks like they were still assembling it when the photo was taken.