Ahh, Petzi, I'm guilty of parochialism, thinking all are like me. Please forgive me. And thank you. I had not looked to see where you lived.
Cracker Barrel is a restaurant chain in the US, found along the major Interstate highways. Their menu is meant to suggest home-style Southern US cuisine, which to a Northerner such as myself, seems to mean cooking everything with bacon thrown in. Their walls are full of antiques - vintage kitchen & farm implements, advertisements and photographs.
Doughboys was the vernacular term for American soldiers in World War I, just as English soldiers of the era were called Tommies.
Cirkut cameras were invented (and purchased) for commercial reasons, not artistic ones. Kodak sold them as the 'greatest money making invention' of all time. And, indeed, they were terrific investments. Their particular forte was taking a single picture of a large group of people, and having each of those many people remain identifiable in the resulting print. From the photographer's point of view, it was lucrative to be able to take one picture and then make many, many prints from it. It became popular during WWI to take a picture of any identifiable military unit, and then sell the members of that unit a print. Thus, many thousands of these types of pictures were produced. The most illustrious practitioner of this art was Eugene Goldbeck, who took pictures of groups as large as 20,000. It takes a great deal of skill and planning to do that sort of thing correctly.