When did drywall come into fashion?
Been doing some 'move in' stuff on the new old house and I've found some original 1949 walls (in the kitchen) that look to be masonite with plaster, then covered with several layers of wallpaper. Kitchen ceiling also appears to be masonite with plaster. Closet walls also. Bedroom walls, or at least SOME of them are drywall, because somebody put up five shelf standards with three molly bolts each... missed the stud on every one.
I'm beginning to think I shoulda took all the wall covering down and started over so I know what's there.