Chicago area I believe. That's where Meucci, Helmstetter and others (Huebler?) were associated with it. I believe it was an offshoot of National Tournament Chalk. Several great names and ventures are associated with it or rooted in it in some way. You can follow the connections to WICO....which then connects to Gus.....and Viking....and others.....
It seems to be one of the "hubs" in cue history in the late sixties/early seventies. They went on to import cues.
There should be plenty on the web about it and I am sure others will chime in with better and or more specific information.