My great-grandfather was an avid photographer. In 1920 he and his family took a cross-country tour of the US. He left an album of very good photographs, which I have, along with the negatives. The prints are 5-1/4" x 3-1/8" as are the negatives, so the prints are most likely direct contact prints. I am trying to figure out what camera he might have used. I'm pretty sure it was a folding camera with a very good lens. It was probably an f/8 or f/11 fixed lens. Focus and DOF are very good in every image. Most images are properly exposed, with good contrast. Any help identifying the film size and possible camera model he might have used would be greatly appreciated. An example is posted above. I don't have any means of making prints from the negatives right now, but my X100 does a good job of copying the prints.