Maybe George is the Guide Stone?
Looked up , George is the keystone and found this about George Washington https://www.mfa.org/collections/object/george-washington-fit-keystone-45740
Fit Keystone medal
https://www.mountvernon.org/preservation/collections-holdings/browse-the-museum-collections/object/m-3121/
Looked up Kennedy in South Dakota and found these
JFK Jr. Visited Mount Rushmore In May
https://www.yankton.net/news/article_2e742b2b-047f-5106-aaa7-36a017566208.html
JFK in South Dakota - 1962
http://www.sdpb.org/blogs/images-of-the-past/jfk-in-south-dakota-february-1962/
TRIP TO WESTERN STATES: PIERRE, SOUTH DAKOTA (OAHE DAM), 10:25AM
https://www.jfklibrary.org/asset-viewer/archives/JFKWHP/1962/Month%2008/Day%2017/JFKWHP-1962-08-17-B
Two Worlds of a Kennedy
https://people.com/archive/cover-story-two-worlds-of-a-kennedy-vol-20-no-14/
Kennedy reportedly spent that night in the nearby, picturesque Black Hills town of Deadwood, where his friend Bill Walsh, 43, an ex-Catholic priest, owns an old hotel that Kennedy had frequently visited.
This is the Oahe Dam that JFK visited in 1962
Found this interesting. From Wikipedia
"In September and October 1804, the Lewis and Clark Expedition passed through what is now Lake Oahe while exploring the Missouri River.
Oahe Dam was authorized by the Flood Control Act of 1944, and construction by the United States Army Corps of Engineers began in 1948. The world’s first rock tunnel boring machine (TBM) was invented in 1952 by James S. Robbins for the Oahe Dam project,[2] which marked the beginning of machines replacing human tunnelers.[3] The earth main dam reached its full height in October 1959. It was officially dedicated by President John F. Kennedy on August 17, 1962, the year in which it began generating power. The original project cost was $340,000,000."
From this article. https://www.yankton.net/news/article_2e742b2b-047f-5106-aaa7-36a017566208.html
Sound familiar?
"Kennedy went to Mount Rushmore to pose for a 4:30 a.m. photo shoot for a USA Weekend magazine cover story on ”Making America Better.”