Relief shown by hachures and spot heights. For Canada, covers southern part between Michigan and Maine. Prime meridians: Washington and Greenwich. Insets: Colton's map of the United States showing the proposed railroad routes to the Pacific Ocean -- Southern part of Florida. Description derived from published bibliography. Mapping the Nation (NEH grant, 2015-2018); Colton's new railroad & county map of the United States, the Canadas &c

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