Bud, were them west coast dogs "watch dog" lines? or was Casey not around yet? I know the "Tacoma" (sp) from up around Oregon'ish area were dual reg dog and were of good size and very functional.
In fact the stud dog was from Oregon. I don't know about any "Watchdog" lines. It was about 1973. These were actually AKC show dogs with UKC papers too. I also trained them in Shutzhund and used them as demonstrator dogs when I trained police dogs.
I have hunted with Jughead's big male, "Major", he calls the line "American Boar Terriers (ABTs)." At first, I tried ridiculed him for over promoting what was at first glance just another darned pit bull. There is so much of that dog-jockey crap going on these days. I figured whoa-boy, another dog con artist in the making!
Boy was I wrong! The proof was found after a long day of hunting, a death march with bay dogs coming in and out of the brush in Major's face all day long, some of my yearling male jagdterriers actually jumping all over him wanting to play and then finally catching a hog after a long chase. His ABT Major is better than 90% of the catch dogs I have hunted with and they are everything he says they are. That male ABT was bumping into my jagdterriers and curs (males and females) all day long and there were no issues. On the hog, he found himself a spot without taking out one of the little dogs and its was a done deal. I am very impressed by the handle he has on that dog, its tolerance for other dogs and its sheer power at the catch.
Here is a photo of that big male American Boar Terrier, "Major" sitting next to my cranky growly little jagdterrier on my dog box. He reminds me of those dual registered AKC/UKC Am Staffs of the 70's only he has more head and neck (e.g., bite)power.