The mysterious Whistlin' Dan Barry rides a black stallion named Satan, followed by a wolf dog named Black Bart. Dan has his own problems, but they multiply when he encounters Jim Silent and his outlaw gang. (Goodreads)
Max Brand, (May 29, 1892 – May 12, 1944) was an American writer known primarily for his Western stories using the pseudonym Max Brand. He (as Max Brand) also created the popular fictional character of young medical intern Dr. James Kildare for a series of pulp fiction stories.