added railroad in Ohio using USGS 3DEP;USGS Topo
added railroad in Ohio using USGS 3DEP;USGS Topo;Bing
added streets, factories in Greenville, MI using Sanborn Maps
connected up railroad in MN using USGS 3DEP
added railroads, including many coal mine spurs, in Ohio using USGS topo; Bing, USGS 3DEP
added railroads in Ohio using USGS topo; Bing, USGS 3DEP
extended railroad to Hatton, ND
added places in Minnesota using USGS Topo; USPS for dates
added railroad and places in IA using USGS Topo, Wikipedia, State of Iowa
extended railroads in Ohio using Bing
Added rivers in NE Michigan by HUC8 04070003 NHD dataset
Added lakes in NE Michigan by HUC8 04070003 NHD dataset
extended Huron River, connecting up segments using Bing
connected up Kalamazoo River, Michigan
added places in Cass, St. Joseph Counties, Michigan using USGS Topographic Maps, USPS
added places, railroad in Michigan using USGS Topo;USPS;Wikipedia
extended railroads in Iowa using USGS 3DEP
added lakes in HUC 04070006 near Alpena MI, Thunder Bay River watershed
added Thunder Bay River and branches from NHD