Mike,
If I recall correctly, that old house seemed to have had electricity added into it in pieces at a time. All but 2 switches in the house were the pushbutton ones. The 4 slot outlets were in kinda odd places, except the duplex one was in a bedroom behind a door. (one of em was in the ceiling in the hallway
) The surface mount P&S was in the living room area loaded with a bigscreen and all kinds of other electronics. The Hubbell T-slot/crows foot combo was in the garage (with a lone piece of wire on the "ground" terminal tied to a water pipe @ the hot water heater). The 2 nema 1-15's in the center of the 1st pic were the same manufacturer as the panel (Diamond S).
The house wasn't really that big.. 2 bedroom, one bath, ratty old 1 car garage. It was maybe 1200 sq ft at the most. The lady who called us told me her grandparents bought the house in the 20's, and her grandpa might've added a few things here and there. As far as I could tell, the K&T there appeared all original except were it looked like it was continued on to the rear bedroom for some reason.
Also worth noting, I've found the Perkins pushbutton switches in an old HUGE house in Los Angeles (built 1903), and a house in "old towne" Orange (built 1898) also... Perkins might have been a popular turn of the century brand out here in So Cal