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Help wantied in identifying Williamson tube preamp circa 1959?

I could use some help identifying an old tube premp that I recently purchased. It is marked "Williamson Model G???, L.A., 16 CALIF." Google comes up with nothing of use. Any information about this unit/company would be greatly appreciated. A link to a schematic/manual gets you a friend for life.

See photos at: http://www.canuckaudiomart.com/forum/viewtopic.php?f=9&t=28299.

Thanks.

John



Help wantied in identifying Williamson tube preamp circa 1959?

try this link, has Williamson info

http://www.oestex.com/tubes/index.html