Chapter 2 (pg 22 to 33), where Dan Hagedorn is talking about the different models and options offered by Curtiss when they were doing their sale pitch into any markets they could find, was: in addition to the variety of wing armament options: "two 23mm Madsen cannon firing explosive projectiles, one under each wing, with 100 rpg or two 20mm Oerlikon guns firing explosives explosive projectiles, one under each wing, with 75rpg"
Sorry to hear you couldn't get onto the website...yes the publisher is in Norway 'European Airlines'. Perhaps do a general internest search on "Curtiss Design 75 Hawk P-36 and International Derivatives"
Hi, I just came across this thread while searching info on Thai Hawk 75N. I'm from Thailand (but currently not in Thailand), so I'll be glad to help with reading or writing Thai.