The Creator's Bill of Rights (officially, A Bill of Rights for Comics Creators) was a document drafted in November 1988 by a number of independent comic book artists, writers, and publishers, designed to protect their rights as creators and publishers and oppose exploitation by corporate work for hire practices and the power of distributors to dictate the means of distribution. Issues covered by the Bill included giving creators proper credit for their characters and stories, profit-sharing, distribution, fair contracts, licensing, and return of original artwork. The signing of the Bill spurred Cerebus creator and self-publisher Dave Sim and Teenage Mutant Ninja Turtles creators and self-publishers Kevin Eastman and Peter Laird to sell or continue selling collected volumes of their comics