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.
Gyro-Kopp-Ters Gyro-Kopp-Ters is an American aircraft manufacturer based in Lake City, Florida and founded by brothers Bob and Arden Kopp. The company specializes in the design and manufacture of autogyros in the form of kits for amateur construction.