a road from Reading, Pennsylvania, to Presqu'Isle, where the port city was to be built, and also supervising the construction of Fort Erie. In 1796, George Washington commissioned Ellicott as the U.S. representative on the commission for the survey of the southern border between the Spanish territories along the Gulf of Mexico coast in Florida and the United States as negotiated in the Treaty of San Lorenzo (also known as Treaty of Madrid) of 1795. Ellicott travelled with a military escort from Pittsburgh via the Ohio and Mississippi rivers and worked together with Spanish commissioners, despite many difficulties, for the next four years. Another "Ellicott's Line" from this survey, running along latitude parallel 31° North, still defines the border today between the future states of Alabama and Florida. One of his many stone markers for the boundary line, the Ellicott Stone, is now located within a historical park about a mile south of Bucks, Alabama. In 1798, Ellicott complained to the government about four American generals receiving pensions from Spain, including General in Chief James Wilkinson, raising the specter of treason, which later involved Vice President (during Jefferson's first term), Aaron Burr. Ellicott showed considerable diplomatic talent during this joint project to bring it to a successful completion, and he presented his final report with maps to the government in 1800. (The Mapping episode of Philip Morrison's miniseries The Ring Of Truth illustrates Ellicott's surveying methods from Ellicott Hill in Natchez, Mississippi, which is now another National Historic Landmark.) The following Adams administration, however, then refused to pay Ellicott for his work done in this survey, and even refused him access to his maps he had submitted with the report. He was forced to sell some of his possessions, including books from his library, in order to support his family. Finally the maps were released in 1803 under the subsequent Jefferson administration, and Ellicott published his Journal of Andrew Ellicott detailing the Florida survey, including the maps. Jefferson, now president, then offered Ellicott the post of Surveyor General of the Northwest Territory. However, Ellicott refused the appointment. His prior negative experiences with the government political administrations may have had something to do with this, but at the age of 49, he also wanted to spend more time with his family and feared that this new position might require him to travel too much. Ellicott instead accepted an offer by Pennsylvania