Benjamin Ranch West
Blue Springs Historical Society
Buffalo Soldier Monument
Civil War Round Table of Western Missouri
Daughters of Old Westport
Elmwood Cemetery
Fort Leavenworth
Fort Osage Historical Society
Fort Osage Museum
Fort Osage National Historic Landmark
Friends of Historic Fort Osage
Friends of the Jesse James Farm
Frontier Army Museum
Jesse James Bank Museum
Jesse James Farm Museum
Kansas City Area Archivists
Kansas State Historical Society
Lafayette County (Missouri) Historical Society
Leavenworth County (Kansas) Historical Society and Museum
Lone Jack Civil War Battlefield Museum and Soldiers’ Cemetery
Missouri State Archives
National Archives-National Military Personnel Records Center St. Louis, Missouri
Pony Express Historical Association
Pony Express National Memorial
Smoky Hill Railway Museum and Historical Society
State Historical Society of Missouri(Columbia)
Trading Post Museum and Historical Society
Westport Historical Society