Office of Harrison County Engineer, Logan, IA No description specified. 1-2 (2 Records) Documents A Phase I Archaeological Survey of a Proposed Road Grading Project Stp-S-43(21)--5E-43 Harrison County, Iowa (1993) A Phase I Archaeological Survey of a Proposed Seven Mile Grading Project Stp-S-43(19)--5E-43, Harrison County, Iowa (1993)