"Fort Necessity : education program for 3rd grade classes."; "United States. National Park Service."; "Fort Necessity National Battlefield (Pa.)--Study and teaching (Elementary)"; "Battlefields--Pennsylvania--Study and teaching (Elementary)"; "United States. National Park Service."; "2008"; "

Government document. \"U. S. Government Printing Office : 2008 -- 740-634\".

"; ""; "P20306"; "pec"; "Battlefields--Pennsylvania--Study and teaching (Elementary)", "Fort Necessity National Battlefield (Pa.)--Study and teaching (Elementary)"; "14256"; .