And just to throw a wrench into the works, I found a high quality frame underneath a very poor rattle can paint job with pipe clamps instead of cable stops. And even once the name was discovered under the rattle can paint it took some research to determine the source... but it was built by a regionally famous builder (Corky Gulbransen (sp) ) and was simply labeled with the brand CORKY.
So, it is better to learn a few of the characteristics of a quality frame than a partial list of names on quality frames.