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added state highways and US routes, military airfield, places in Michigan using Bing imagery, Wikipedia for source dates
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extended logging railroads in MN using USGS 3DEP
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extended railroads in MN using USGS 3DEP
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connecting up railroad in MN using Bing
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added railroad name, more precision to start/end dates,
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added logging railroads in Michigan using USGS 3DEP
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extended/added railroads in NE MN, including logging spurs, branches USGS 3DEP, USGS Topo, Bing
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extended and added railroads, including many logging railroad ways in Northern MN, using USGS 3DEP, Bing, USGS Topo
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added, extended railroads, particularly logging railroads (Alger-Smith Co.?) in MN using USGS Topo, Bing imagery, USGS 3DEP
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added Finland, MN, extended/added railroads, including logging spurs, branches, mainline of the Alger-Smith Company using USGS 3DEP, USGS Topo, Bing
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extended and added railroads, including many logging railroad ways in Northern MN, using USGS 3DEP, Bing, USGS Topo
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connected up railroad in Michigan using Bing imagery; USGS Topo, added places using dates from Wikipedia
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fixed approximate start/end dates using USGS 3DEP
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added railroad name, more precision to start/end dates, extended using USGS 3DEP
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extended railroads in WI and MN using Bing, USGS 3DEP, USGS Topo, adding places using Wikipedia for source dates
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extended railroad in WI using USGS 3DEP, USGS Topo, added places using Wikipedia for source dates
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extended railroads in WI using USGS 3DEP, USGS Topo
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added railroad start/end dates, extended railroad using USGS 3DEP
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added railroad start/end dates, places using Wikipedia, Bing
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connected up railroad in Minnesota using Bing imagery; USGS Topo, added places using dates from Wikipedia