Edward Sherrif Curtis (1868-1952 )Masks by William Mortensen in Ferdinand P. Earle's film Lover's Oath, c. 1925. Three period silver proofs, signed in ink in the lower right-hand corner. 24 x 19 cm with marginsEdward Sherrif Curtis (1868-1952)Mas ks by William Mortensen in Ferdinand P. Earle's film Lover's Oath, c. 1925 . Three vintage gelatin silver prints, signed in ink in the lower right corner. 24 x 19 cm with margins