Kirby continued as penciler through #32 (Feb. 1963), while helping to launch the Fantastic Four, the Hulk and other iconic characters of the "Marvel revolution". He drew covers through issue #47. Issues #33-35 were drawn by EC Comics veteran Jack Davis — some of the last color comics he would draw before gaining fame at the black-and-white satirical comics magazine "Mad". After several issues by Ayers, followed by a single issue by long-time "Kid Colt" artist Jack Keller, Larry Lieber, Lee's writer brother, began his nine-year run as the series' writer-artist, which lasted over 75 issues from 1964–1973. Lieber said in 1999,