Happy Presidents' Day! Incredible archive photos of how one of America's greatest landmarks was built

Completed during the height of the Great Depression, the carving of Mount Rushmore took nearly 14 years to complete.

Built from October 1927 to 1942, the construction of the monument involved more than 400 men and women working for as little as $8 a day, according to the National Park Service.

But, at the height of the depression, many workers saw the construction of Mount Rushmore, with all its inherent difficulties, as significantly better than having no job at all.

We dug through the archives to find photos of one of America's grandest and most imposing monuments.