Gene, I'll try to look up info in the downtown Los Angeles library when I'm near the library next week. Don't know if they have old business licenses on file, but they do have some old phone books and a historical photo collection. Will check on this Robin & Robin chip, and also the 631 Spring St. chip you posted earlier.

The 7 Ocean Front, Venice address would be in the area where midway & carnival games were set up in Venice in that era. The 631 Spring St. address is probably a high-rise office building today, in the middle of downtown LA. Will post what I'm able to find out, but my trip to LA is not till middle of next week.