After his prison term, Carr went to work for United Press (UP), which later became United Press International (UPI), where he was hired as a copy boy in 1946. He remained on good terms with his Beat friends, and served as best man when Kerouac impetuously married Joan Haverty in November 1950. Carr has sometimes been credited with having provided Kerouac with a roll of teleprinter paper "pilfered" from the UP offices, on which Kerouac then wrote the entire first draft of "On the Road" in a 20-day marathon fueled by coffee, speed, and marijuana. The scroll was real, but Carr's share of this first draft tale is probably a conflation of two different episodes; the 119-foot first roll, which Kerouac wrote in April 1951, was actually many different large sheets of paper trimmed down and taped together. After Kerouac finished that first version, he moved briefly into Carr's apartment on 21st Street, where he wrote a second draft in May on a roll of United Press teleprinter, and then transferred that work to individual pages for his publisher.