This is a nifty little airplane, more like what I flew back then. It was used a lot for aerial observation especially artillery spotting. Also used to chauffer VIP officers around. It had great short take off and landing specs.

Specifications (O-1E):
Engine: One 213-hp Continental O-470-11 flat-six piston engine
Weight: Empty 1,614 lbs., Max Takeoff 2,400 lbs.
Wing Span: 36ft. 0in.
Length: 25ft. 9in.
Height: 7ft. 3.5in.
Performance:
Maximum Speed: 151 mph
Range: 530 miles