Cattlemen's is a CA chain of steakhouses. (Pretty good, though consistency can be hit/miss.) My memory can be a bit untrustworthy but you used to be able to buy their sauce in local stores, with their logo on the label. Gotta' wonder if this is the same thing, now nationwide, and bought out by McCormick/French's? The websites show it with the Registered TM logo.
I think it made a great base, although now I tend to use Sweet Baby Ray's. Only fill my squirt bottle 3/4 full and then will top off with orange juice for chicken, vinegar for pork, or bourbon for beef.
Update: I really shouldn't post from memory. Yes Cattlemen's is a restaurant chain, and an earlier Cattlemen's BBQ sauce label looked a bit like their logo but they're independent--even if I've been confused about that fact for ~15 years!
French's Foods (yeah the mustard people) developed it in 1963-1965. French's was founded in NY in 1883 but
acquired in 1926 by the British company Colman, who also owned Reckitt.
Reckitt & Colman acquired Durkee spices (also of NY) in 1986 and
consolidated them a year later into a single operation based in NJ.
Reckitt merged with the Dutch company Benckiser in 1999 and
sold off French's to McCormick in 2017 after
having sold off Durkee (their other food operation) to B&G the year before.
(
B&G is the parent company of Crisco, Wrights liquid smoke, The Texas Roadhouse restaurant chain, and the spices/sauces that bear the Weber name.)
It was in the mid-late 2000's that I was buying Cattlemen's in the half-gallon jug at a good price at my local Costco, as I recall, (famous last words) and the photo below shows one of those RB half-gallon jugs (that I still use) to mix my own stuff. Diluted many times since then, I suppose there's still a few molecules of the original still making it's way, over a decade later, into my cooking. Oh, where does the time go?
Yeah, it was good stuff back when I was buying it (but so is sweet baby rays today) but I don't recall seeing it since, certainly not at Costco. This post certainly brought back memories that are getting a bit musty.