Category:1778 in the Northwest Territory United States portalHistory portalThis category is for topics specifically related to the year 1778 in the U.S. territory of the Northwest Territory.17731774177517761777177817861788178917901791 1720s1730s1740s1750s1760s1770s1780s1790s1800s1810s1820s Subcategories This category has only the following subcategory. / 1778 establishments in the Northwest Territory (1 P)
