John G. Hedden, Highway Archaeology Program, U. of S.D. No description specified. 1-1 (1 Record) Documents Letter Report: Supplemental Survey for Muscatine County Primary Roads Project Stpn-22-4(58)--2J-70, A.K.A. 94-70010-1, Supplemental to Project Completion Report Vol17, No.9 (1994)