My mother in law owns farm she grew up on. Her parents did not buy the house but acquired it from relatives - and it was one of those "Craftsman" homes. Not sure when it was built, 1920's to 1930's I'd guess. We were doing some renovating a few years ago to get it back into good shape - it hadn't been occupied for 30 years. If you paid close attention you can find a number stamped on most boards - those would have corresponded to a number on the framing plans.
We did find on the back side of a piece of trim we had removed a shipping label. It was shipped by rail from Chicago to a nearby town.
They may have had more then one source for these over the time period that they sold them - the one that was in my Dad's house had very identical bus and breakers to many Crouse -Hinds panels made about that same time.
I know they have/have had different appliance manufacturers make their Kennmore appliances over the years.