This site, known as Millersville or Thompson's, is about two miles north of Hebron, in Thayer County.  George B. Thompson acted as the stationkeeper for Pony Express operations at this station, and the station was named after him.  As late 1960, Nebraska Monument No. 11, erected in 1912, stood near the site, about five miles southwest of Alexandria, on the east side of the county road. The text read: "Thompson's Stage Station, 125 rods West, 23 rods South." http://www.nps.gov/parkhistory/online_books/poex/hrs/hrs4c.htm

I've plotted a point approximately 2 miles north of Hebron and southwest of Alexandria