Ellis Parker Butler (1869-1937) was the author of more than 2,000 stories and essays, as well as 30 books. He remains most famous for his short story "Pigs is Pigs," in which a bureaucratic stationmaster insists on levying the livestock rate for a shipment of two pet guinea pigs, which soon start proliferating geometrically. This collection reveals his thoughts on writing humor, including "Ten Rules for Humor" and "How I Sell My Stories."