Don Pyeatt wrote:
The 4 cyl. engine's valve covers have a white circle with an "L" inside.
Lycoming


As for the airplane, the registration number makes it easy to find :

Manufacturer: Curtiss Wright
Model: JR CW1 (Wright Junior)
Year built: 1931
Serial Number (C/N): 1151
Mode S Code: 50024614
Aircraft Type: Fixed wing single engine
Amateur-Built: No
Number of Seats: 2
Number of Engines: 1
Engine Type: Reciprocating
Engine Manufacturer and Model: Lycoming 0-145A SERIES