In February 1940 Welles supplied Mankiewicz with 300 pages of notes and put him under contract to write the first draft screenplay under the supervision of John Houseman, Welles's former partner in the Mercury Theatre. Welles later explained, "I left him on his own finally, because we'd started to waste too much time haggling. So, after mutual agreements on storyline and character, Mank went off with Houseman and did his version, while I stayed in Hollywood and wrote mine." Taking these drafts, Welles drastically condensed and rearranged them, then added scenes of his own. The industry accused Welles of underplaying Mankiewicz's contribution to the script, but Welles countered the attacks by saying, "At the end, naturally, I was the one making the picture, after all—who had to make the decisions. I used what I wanted of Mank's and, rightly or wrongly, kept what I liked of my own."