At the "Herald", Outcault worked alongside fellow comic strip pioneer Winsor McCay (who at that point was mostly working on illustrations and editorial cartoons). A rivalry built up between the two cartoonists, which resulted in Outcault leaving the "Herald" to return to his previous employer, William Randolph Hearst at "The New York Journal". In the "Journal," Outcault began experimenting with using multiple panels and speech balloons. Although he was not the first to use either technique, his use of them created the standard by which comics were measured.