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Add river
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Add Copenhagen lakes (reservoirs)
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Add end date for some streets not in the 1872 map
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Add 1872 railroads
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Add sea fortification details
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Set earlier start date for place=city based on historical prominence, move point closer to historical center
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Add to 1853 street network
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Add some major streets of 1853 street network
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Add city gate roads and outer roads
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Trace outer embankments
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Add city gates
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Add southern moat
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Add ~1620 to ~1870 city moat
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Add railroad warehouse
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Slightly adjust street segments that were traced from a poorly aligned older map and had implausible geometry
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Tag bridge as bridge area
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Add 1849 extent of the Cove
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Adjust railroad tracks based on higher resolution source, add station
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Update Providence and Plainfield Railroad with start date and approach to Providence
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Correct original terminal for railroad based on description in source