Vintage Fender guitars made before 1957 all had linear pots. This would include, of course, all blackguard Teles and early Strats. I am fortunate enough to have owned a bunch of those guitars, and I always preferred the linear taper volumes over the audio taper used after '57. I feel that they allow me to control the amp better, and they're much better for Roy Buchanan style volume swells. I'm wondering why they fell out of favor? Seems like nobody is using linear volume pots anymore.