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Map 8.2 The Northwest Territory and Ordinance of 1785 Surveyors ventured into the eastern edge of the Northwest Territory in the 1780s and produced this first map (right) showing neat six-mile-square townships, each subdivided into one-mile squares containing sixteen 40-acre farms. Jefferson got his straight lines and right angles after all; compare this map to Jefferson’s map of the Northwest Territory.
Plat Map © TNGenNet Inc. 2002.