Love those old machines.
I have a 1930 model 66 Singer that runs like a dream in the cabinet I got off Craig's list
in a cabinet. The cabinet is the original, and needs some work.
I also have a 1937 model 201 Singer also in the original cabinet. Runs good also, but squeeks. It was bone dry when I bought it, but I cleaned it up and oiled it. Apparently it needs more oil.
What a good day you had and such great finds!