While traveling to Washington D.C., Plenty Coups toured George Washington's estate, Mount Vernon, and was struck by the idea of a national monument open to all.

In 1932, at age 84, Chief Plenty Coups passed away and at his and his wife, Strikes the Iron’s, request, a portion of their homestead was made into a state park which eventually grew to 195 acres for all people to visit and learn from and still operates as such today!

At the burial of the unknown soldier at Arlington Cemetery in 1921, Chief Plenty Coups attended as a representative of all the Indian Nations. While the ceremony commenced, Chief Plenty Coups placed his headdress and two coups sticks on the tomb in honor of the fallen soldiers.

The headdress and coups sticks can still be seen today on display in the Virginia cemetery. Chief Plenty Coups was a well-known statesman and ambassador, he knew several U.S. Presidents and met many foreign leaders during his life. 

Chief Plenty Coups is remembered for helping to bridge the divide between Native American people and white settlers during a time when the Native American people were being coerced into giving up their traditional ways. 

Through the Indian Allotment Act, Chief Plenty Coups received an allotment of land which included a sacred spring, something that Plenty Coups envisioned as a young man, and became one of the first Apsáalooke to own and settle on a farm.