Where was John Callahan, creator of John Callahan's Quads, from?
John Callahan (cartoonist) John Michael Callahan (February 5, 1951 – July 24, 2010) was a cartoonist, artist, and musician in Portland, Oregon, noted for dealing with macabre subjects and physical disabilities.
John Gross (musician) John Gross "(né" John Curtis Gross; born on 30 May 1944 Burbank, California) is an American saxophone, flute and clarinet player. He is the creator of a notational method called "Multiphonics for the Saxophone".