First I must say....I can't confirm or deny the the following chips were used at the Weeping Willow in Lincoln, Ca. I hope to travel there tomorrow and research a few things that might help sort things out either way.
I will post what I have so far. Some of the info is concrete and some might be educated guesses.....

1961-62 Otto Heintz has the Lielight Restaurant.

1962....chips are sent to Mickey Meirich (spelling? Hard to read Card) and Otto Heintz
505 Club. I haven't found Mickey yet.

These guys ...father/son ...brothers?? Ran the 505 Club before and during the time of the order of the chips. I swear I have a chip that says Riolo on it around here somewhere!!

First listing with Otto Heintz and 505 Club ...1963-64
He is listed with 505 Club until 1966.
1968....no listing
1970....no listing

Another orde of chips O & F. I know the O is for Otto, but I don't know the F.(could be Fisher??)

1972... listed as emp (employee) of Golden Mug Card Room
**** please do not put record cards on the ChipGuide at this time.****

Listed as the owners of the Golden Mug Tavern

1977... now is Golden Mug pizza

1976-79 Otto listed as retired
He passed in 1979