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1 5.0 OTHER RESOURCES Historical documents, detailed below, were reviewed in order to identify possible previously undocumented historic sites that might be impacted by the proposed Project. 5.1 GLO Maps , Minnesota's Original Public Land Survey Maps were viewed online through the Minnesota Geospatial Information Office ("MnGeo") website. The Project location was surveyed in 1854 and 1855 under the jurisdiction of the Surveyor General of Iowa and Wisconsin as a means of dividing the western lands into grid-shaped townships and sections. None of the GLO maps representing the Project location show any cultural features within the proposed Project's 400 foot route width or existing Xcel Energy Orono Substation 16-acre site. In addition, the description of environmental and topographic conditions indicates that much of the area was swamp or marshland at the time of Euro American arrival. 5.2 George B. Wright In the late nineteenth century, George B. Wright published an atlas of Hennepin County which is available for viewing online through the University of Minnesota John R. Borchert Map Library. The Medina page presents the Project location in detail, showing the St. Paul and Pacific Railroad as the only cultural feature,which is currently the BNSF Railroad. 5.3 J.William Trygg Composite Maps , The Trygg maps were created in 1950 and combine information from the GLO Survey plats and field notes and miscellaneous other early sources into a series of 46 sheets covering Minnesota and portions of Wisconsin, Michigan and Iowa. Aside from a road and trail to the south of the Project location,no cultural features are identified in the area. 5.4 Historic Aerial Photographs URS reviewed aerial photographs of the cultural resources Study Area online from the University of I Minnesota John R. Borchert Map Library (U.S. Department of Agriculture). The 1937 aerial shows the rural landscape with agricultural fields and farmsteads as well as small,scattered stands of woods. Subsequent aerials (1940, 1951, 1960, and 1971) showed little change from the 1937 photo. Several of the farmsteads visible on the aerial photos correspond with current residences depicted on modern aerials. In addition, structures relating to previously identified historic properties are able to be compared to existing structures on modern aerial photographs. Of note is the location Orono Project Phase Ia Literature Review April,2011 ' MPUC Docket No. E002/TL-11-223 14