My great grandfather must have made his own glass plates as I remember seeing into his dark room and seeing large, maybe 16x22 inch frames. No enlarger but several jugs of some chemicals. I wish I knew what happened to the trays et c. I think one of my uncles made off with them.
The dark room was unique. They lived in a house he built following the Civil war which looks very similar to the Grant Wood American Gothic painting. My room, after his passing and grandfathers takeover, was in the peak. There was no central heating fire places in each room (none in the peak), no running water (except for a spigot over the dry sink in the kitchen yet another story), and electric via Victorian open wiring.
The dark room was converted from the cubby hole beneath the staircase. He cleverly cut a hole in the wall. Installed a red glass pane and fitted a shelf beneath upon which he positioned a lantern at night perfect! There were several portraits he had made around the farmhouse but none survived to gain wall space here. I wonder who has (had?) them. But the biggest mystery and the most troublesome to me is, where are the negatives?