California, the broke state. I quit going to CA when they started searching cars for cigarettes at the NV/CA border.

California has had legal card rooms for many years, probably 1,000’s of them.
They have also had some full blown illegal casinos. I have quite a few hubs going back to the 1920’s. Hard for me to tell if they were legal card rooms or illegals. Hopefully will get around to researching them someday.
Here are two, I know were full blown illegal casinos, craps, roulette, etc. Jackson had quite a few illegals until they were closed in 1957.

Louvre
Jackson, California
These are roulette chips. I have 3 colors. They came from the Mayor of Jackson 1972-88, Mike Spinetti. I think most reading this will recognize the name. Mike and I have been friends many years. Mike remembers having dinner there roughly 1956, when he was 10 years old.
The owner was Chuck Fuller. Chuck was Sharkey’s partner in the Gardnerville, NV casino until gaming pulled Chuck’s license.
The Louvre was an upscale place and operated 1940’s-mid 1950’s.

The Bank Club
19 Main St
1942-51
Full fledged illegal per Steve McLendon
Mike Spinetti also gave me this chip but was only 4 years old when it closed. Here is the kicker, Mike owns this building today.

Pretty sure these were illegals.

Sundown Club
San Francisco, Ca
Illegal private club pre 1958-Mentioned in KOBY radio station brochure as prior tenant in their building.

Film Row Club
San Francisco, CA
Owned by Lesley Cohen, illegal bookmaker, also owned the Kingston Club in SF

Maybe-maybe not illegal.
JD In Horseshoe.
JD Sherman
Mill Valley CA
1938

BGP-Dick Dascomb
Route 1 Box 200
Taft Ca
No date on card.

Andre Club
L. Andre
727 10th St
1939
This one is listed wrong in on line guide.

If I am wrong on any of these, I am sure the CA boys will chime in.