Bar-20 Days (Illustrated)

Hopalong Cassidy could fan a gun like a Bill the Kid.... Six rounds in three seconds was his slowest time. No one in the state of Texas could beat him. Until he met Slim Travennes, head of the Sandy Creek Vigilante Committee. Slim was snake-fast. No man could go up against him and live. No man. Hoppy could stand or die. He had no other choice. None at all (Goodreads).

Clarence E. Mulford (3 February 1883-10 May 1956) was the author of Hopalong Cassidy, written in 1907. He wrote it in Fryeburg, Maine, United States, and the many stories and 28 novels were followed by radio, feature film, television, and comic book versions. Clarence was born in Streator, Illinois. He died of complications from surgery in Portland, Maine. Mulford set aside much of his money from his books for local charities.