Conrad Knutsen (American, born in 1954) art print poster, Jazz Festival New York City Bluetone Club, 1962. Signed in the print lower left. Framed. Conrad Knutsen has close to 30 years of professional experience as a fine artist and commercial illustrator. His work has been published in many publications and is exhibited in many galleries across the U.S. Conrad is currently illustrating a series of images for postage stamps for countries around the world. Vintage retro graphic art prints, posters, and collectibles.