The Fort Stanwix Treaty and earlier treaties established the approximate western boundary, but a survey was required to establish the exact line. Phelps believed that the line ran through Seneca Lake and included the former Cayuga settlement of Kandesaga, present-day Geneva, New York. He planned to make Geneva the headquarters and location of the land sales office. He hired Col. Hugh Maxwell, a man of high reputation, to perform the survey. During his original survey for Phelps and Gorham, Maxwell was assisted by Augustus Porter and other surveyors.