Andy Warhol, ‘Campbell Soup Can (Tomato)’, 1981, Art Resource Group
Andy Warhol, ‘Campbell Soup Can (Tomato)’, 1981, Art Resource Group
Andy Warhol, ‘Campbell Soup Can (Tomato)’, 1981, Art Resource Group

Publisher: Cat. Rais: IIIA.26, Feldman & Schellmann, printed at Licht Editions (Denver) and published by Colorado State University

http://www.modernindenver.com/2014/12/warhol/
This brief article discusses Warhol's 1981 visit to Fort Collins, http://www.westword.com/arts/warhol-in-colorado-john-bonaths-15-minutes-of-fame-5798162
This is photographer John Bonath's recollection of the Fort Collins visit, including this description of the line to get a Warhol signature:
including "signings with a waiting list a mile long"

first met Andy Warhol at the Denver Museum in 1977 - so I attended the opening of his show at the museum. Andy signed the "Double Elvis" exhibition poster and signed a dollar bill for me. Later I heard that Andy would be coming to For Collins in 1981 for the exhibit that John and Kimiko Powers sponsored at the university. I purchased this T-shirt for $500 and had Andy sign it that day.

About Andy Warhol

Obsessed with celebrity, consumer culture, and mechanical (re)production, Pop artist Andy Warhol created some of the most iconic images of the 20th century. As famous for his quips as for his art—he variously mused that “art is what you can get away with” and “everyone will be famous for 15 minutes”—Warhol drew widely from popular culture and everyday subject matter, creating works like his 32 Campbell's Soup Cans (1962), Brillo pad box sculptures, and portraits of Marilyn Monroe, using the medium of silk-screen printmaking to achieve his characteristic hard edges and flat areas of color. Known for his cultivation of celebrity, Factory studio (a radical social and creative melting pot), and avant-garde films like Chelsea Girls (1966), Warhol was also a mentor to artists like Keith Haring and Jean-Michel Basquiat. His Pop sensibility is now standard practice, taken up by major contemporary artists Richard Prince, Takashi Murakami, and Jeff Koons, among countless others.

American, 1928-1987, Pittsburgh, Pennsylvania, based in New York, New York