There is some resemblance to the Boeing P-26 Peashooter, wheel pants , cowling, tapering of fuselage to epinage, otherwise , two very different airplanes. The P-26 is a single-seater as well.
Klaatu83, e-mail, 18.03.2011 23:46
Despite it's slight superficial resemblance to the A-12 Shrike the P-26A was not a Curtiss product, it was developed by Boeing.