I went to HH in the San Fernando Valley as a kid back in the 60’s
I still go there. Usually get the Stella Special. Half a sandwich, small salad and crock of French Onion soup. I also like their blue cheese bacon burger with fries.
There is only a few HH left. The family was bought out and rapidly expanded. That didn’t work out and most got shuttered. The food quality also went down IMO. The family bought the few remaining restaurants back, improved the food and have been doing well.