DC Comics Bonus Books were 16-page comic book stories inserted into issues of existing DC Comics series to showcase new writers and artists.[1][2] Running from April 1988 to February 1989, they consisted of a front cover, 14 pages of story, and a back cover with a brief biography of the story's creators. The addition of the insert did not entail an increase in the price of the comic book.[3] The Bonus Books featured early work by such comics creators as Mark Askwith, Jim Balent, Randy DuBurke, Dean Haspiel, Rob Liefeld, Gordon Purcell,[4] and Denis Rodier.[3]
For just under a year (between April 1988 and February 1989 cover dates, in fact), one DC title each month would have an additional 16 page story in the guise of a separate comic, right in the middle of the book. These "Bonus Books" were used to try out new talent.
16-page inserts will be rotated through various DC titles...in 1988. They will be produced by new talent, and one such insert will appear in Warlord.
DC also gave the young cartoonist a one-off assignment. They asked him to work on a bonus book (a free comic stuffed inside another comic) that would be paired with the next issue of Flash.