Where can you find information about a Hopkins and Allen Forehand model shotgun serial number 745329?

Answer 1

Forehand Arms Co was absorbed by Hopkins & Allen c.1902, and for a couple of years H&A produced shotguns with the Forehand name. By the start of WW1 H&A was attempting to fill military contracts with the Belgian government which drove them into bankruptcy, with Marlin absorbing the remnants in 1921. Value is going to be uniformly low, under $100.