The "Gazette" became known for issues-oriented reporting, and Heiskell used it as a platform to advocate for civic and charitable causes. In 1907, he published several editorials calling for construction of a public library in Little Rock. His advocacy was successful, and when the library opened, Heiskell received its first library card and an appointment to the board of directors, on which he served until his death. Heiskell's activism also included service on the state Civil Service Commission and Planning Board and the Pulaski County Planning Board.