A bit of super-sleuthing -- as I do!
I just bought this camera -- it's a 1934 National Graflex (120 format film, 2.25" x 2.5" frame size). It came from an eBay seller out of Singapore. It arrived yesterday and I noticed that it had the original owner's name imprinted on the inside the box and the camera's manual. Being the curious fellow that I am, I googled his name. Darned if something didn't show up!
There was an entry in the Ramsey County (Minnesota) Historical Society's database -- a picture taken by Martin H. Hense, Jr. back in September 1938 at the Minnesota State Fair. I contacted the historical society and they not only sent me a copy of the image, but also some further info regarding Martin H. Hense, Jr. As of 1938, he still lived at the address that's on the camera box, and he was a driver/chauffeur for his father's cab company. Looks like he was in his early 20's. And actually, I did a bit more super-sleuthing and found out that he's buried at Ft. Snelling (where my loving wife's grandfather and grandmother are also buried): Hense, Martin Hubert, b. 12/23/1915, d. 02/01/2000, Section 6-A, Site 492, US NAVY, AOM2 (which I'm assuming stands for Aviation Ordnanceman 2nd Class Petty Officer?), WORLD WAR II.
My thinking is that since he was in his early 20's and he was a driver for his father's cab company, he likely didn't have a bevy of cameras at his disposal. Plus, he surely wasn't updating/replacing his cameras every 4 years (as some of us do.....hmmm I wonder who!). And here's the kicker for me -- the proportion of that photo is pretty close to the proportion of the Graflex's negative size. So I think this camera took that photo -- at least that's what I'm telling myself. What do you think?

Graflex1 by
Vince Lupo, on Flickr

Graflex2 by
Vince Lupo, on Flickr

Graflex3 by
Vince Lupo, on Flickr

Martin Hense Graflex Photo by
Vince Lupo, on Flickr