In his last years of working with "Mad", Martin had a falling out with publisher William Gaines over royalties for the paperback compilations of older "Mad" articles and cartoons released under new omnibus titles, such as "The Self-Made Mad." Gaines insisted that Martin's original page rate was for both publication in "Mad" and all future reprints in any format. Martin objected, claiming at one point that he had likely lost over $1 million in royalties because of this "flat rate" for this work. Martin later testified before a Congressional subcommittee on the rights of freelance artists.