The VanBuren County Historical Museum (a great afternoon visit, btw) is sitting on dozens, if not hundreds, of 4×5 glass negatives. Some of them were on display on a light table. I snapped a few with my iPhone and did a quick conversion of one using Snapseed (an iPhone image editor), which was perhaps the first time a “print” had been made from the negative in possibly a hundred years (these types of negatives were popular between the 1880s and the 1920s). Here are a few I “processed” in Lightroom. Sadly, I am sure that these images cannot reproduce the detail that is likely stored on those plates.
You can see more of his scans in the Michigan in Pictures group on Facebook & in his massive Michigan: Van Buren County gallery on Flickr!