I've only seen Wadsworth panels twice, and once was on a cabin Big Bear, CA wayyy up in the mountains. I found it after we inadvertently plugged 2 space heaters into the same circuit. Breaker never tripped, but made a hell of a buzzing sound after a while.
Bulldog/Pushmatic is fairly common around CA in installs from the 50's/60's (The house I grew up in had Pushmatics and was built in 1958).
