Home > Fiction > The Great Gatsby > Page 21 The Great Gatsby Page 21 by F. Scott Fitzgerald 47. (p. 164) Hopalong Cassidy: A cowboy hero in the novel of that name written by Clarence E. Mulford in 1910 (Chicago, McClurg). Gatsby's inscription of 12 September 1906 is thus a small anachronism. ‹ Prev Next ›