Is there a book that has history of Stevens 940 model shotgun?

Yes, there are books that cover the history of the Stevens 940 model shotgun, particularly those focusing on American firearms and shotguns. One notable resource is "The Shotgun Book" by Jack O'Connor, which includes information on various shotgun models, including the Stevens line. Additionally, collectors' guides and historical texts on Stevens firearms often provide insights into the development and features of the 940 model. For more detailed information, specialized firearm history books or dedicated websites may also be helpful.