according to state tourism officials , other centennial re-enactments will be in oklahoma city april 8-9 ; lawton may 20-21 ; pawnee and fort gibson may 27 ; yukon june 8-11 ; norman july 21-23 ; ponca city sept. 16 , fountainhead state park sept. 30 ; salina oct. 7 ; lawton oct. 29-30 and in oologah nov. 11 .