Leonard Norman Wein, was an American comic book writer and editor best known for co-creating DC Comics' Swamp Thing and Marvel Comics' Wolverine, and was the editor for writer Alan Moore and illustrator Dave Gibbons' influential DC miniseries "Watchmen", Watchmen is an American comic-book limited series published by DC Comics, in which years?
Len Wein:  Additionally, he was the editor for writer Alan Moore and illustrator Dave Gibbons' influential DC miniseries "Watchmen". Watchmen: Watchmen is an American comic-book limited series published by DC Comics in 1986 and 1987, and collected in 1987.
1986 and 1987