The postmaster of Keystone, South Dakota (the post office nearest to Mount Rushmore National Memorial) extended the kindness of applying an unrequested pictorial cancellation to these four covers. While I appreciate the gesture, I think the pictorials deface them more than augment them. In any case, each cover features a processed image of Mount Rushmore, a quote by each respective President, and uses the President's stamp from the 1986 Ameripex souvenir sheets and a 1991 "Flag over Mount Rushmore" coil stamp (Scott 2523) that I found in a discount postage lot.