Found it on CL, New Jersey! 400pg, mostly on armament and propeller installation/maintenance. Full preflight, 25-50hr inspections, lube points, gun/prop synchro procedure, landing gear, communications and more.
One of the few military aircraft with car doors and roll up windows!
The USA didn't like it and the Brits didn't care for it because of lack of performance but the Russians used it as a Tank buster with great results
Last picture is the converging chart for the guns. 1-37 mm cannon, 2-50 cal. and 4- 30 cal guns.It has a nice list of the various models and the differences.