Distinguished American sculptor (1867–1941) best known for his monumental depiction of four presidents on Mount Rushmore. Fountain pen signature, “Sincerely yours, Gutzon Borglum,” at the bottom of an off-white 8.5 x 5.25 sheet bearing a TLS to Borglum requesting his autograph. A vertical fold through a single letter of sentiment, a rough bottom edge, uniform toning, and a small pencil notation at top, otherwise fine condition. RRAuction COA.