DS, signed “William Boyd”, one page, 7.75 x 10.25, December 18, 1950. A document modifying an earlier agreement related to “Hopalong Cassidy” screen credit for writer Clarence E. Mulford. Matted together with an unsigned photo to an overall size of 18.75 x 13.5. In fine condition, with usual light folds to document. R&R COA.
