I Google the address, this is what I found: 131 N. Lang Avenue, West Covina, CA, 91790 - Warehouse Property on LoopNet.com
Looks like it may be for sale. I will be in S. Ca. next week, want me to go by there and see if they still exist? I will be in the El Monte neck of the woods, auditing a grocery store. Looks like it's about 10 miles from where I will be.
"When I was younger, I could remember anything, whether it had happened or not." - Mark Twain