Kellogg American Air Compressor?
Air Compressor information plate
I recall dad working on this unit in the 1960s so it predates that time.
The compressor is driven by a 1-1/2 hp Leland electric motor.
A tag on the compressor end has both the model and serial numbers but I've been unable to tie this unit to anything I can find on the internet.
There are a variety of casting numbers, one on the head, one on the main body, and one on the hub. They are all seven digit numbers starting with either 5 or 6.
Looks like images I've seen of two stage Kellogg American compressors, but the model number does not jive.