Chicago: A.C. McClurg & Co., 1918.
Hardcover. First edition. Illustrated by Frank E. Schoonover. Front hinge repaired with canvas tape, edgewear to the spine ends, a sound, if only good copy, without dustwrapper. Owner's bookplate on front pastedown Signed by Mulford. Tipped-in is a Typed Letter Signed by Mulford, enclosing the bookplate. Basis for the 1938 film *Partners of the Plains* featuring William Boyd as Hopalong Cassidy.