oooh what beautiful treasures you have there!!!!
I bought two antiques last year.. I have a hand crank one from 1905 and a Featherweight from 1943. I sew on the Featherweight all the time and just love it!!!
At the moment I have them both displayed in my sewing room. The hand treadle one I'm not sure if I'll use that one, so I have it displayed with an old crazy patch quilt I made many years ago. I have some bears around it too!!!
You have some gorgeous machines there!!!! Enjoy them!!