In 1784, a year after the Treaty of Paris was signed, George Washington and Horatio Gates traveled to Annapolis to seek the state's assent to the project. Washington urged Virginia Governor Benjamin Harrison to bring the matter to the Virginia Assembly, citing the "commercial and political importance" of the project. Washington's formidable reputation in the U.S. during the time after the Revolution persuaded the governor to present a letter to the Virginia Assembly asking for support for the project. The Virginia Assembly appointed Washington, Gates, and Thomas Blackburn commissioners to seek Maryland's agreement. Washington's subsequent visit to Annapolis was successful and led to the incorporation of the Potomac Company in 1784 Maryland and 1785 in Virginia. These meetings would continue and have a major impact on national development as the navigations on the Potomac were in regular use supporting coal from Cumberland to Georgetown until 1929; in 1908 the Inland Waterways Commission notes the following significance: