The four faces, with Washington and Lincoln prominent - Mount Rushmore National Memorial, SD. Lack of funds and unfavorable weather caused the 6.5 years of work to be spread over a 14-year period. The project came to an end in October 1941. Gutzon Borglum had died seven months earlier at the age of 74, leaving the final work to his son Lincoln.Photo: Russ Finley Film Size 35mm