 Kellogg , Louise P. ( 1917 ) . Frontier retreat on the upper Ohio , 1779 – 1781 . Madison : State Historical Society of Wisconsin , pp. 309 ( Brodhead to Clark , December 16 , 1780 ) , 400 ( Brodhead to Huntington , May 30 , 1781 ) , 454 ( Order for a court of inquiry , Fort Pitt , September 3 , 1780 ) . ISBN 0 @-@ 8063 @-@ 5191 @-@ 8 . 
