James Shepherd Pike (1811–82) was born in Calais, and achieved a nationwide reputation as a journalist with a strong anti-slavery voice prior to the American Civil War. During the war he served as United States Ambassador to the Netherlands. Upon his return from that posting, he purchased the Mansion House, a large Federal-style mansion in Robbinston, where he lived in semi-retirement. He continued to write on subjects related to African-American civil rights, but became bitterly opposed to the corruption and mismanagement of the Reconstruction Era.[2]
Pike is said to have carefully measured the route from his house to Calais, and then placed these stones sometime between his purchase of the Mansion House and his death in 1882. He is also said to have used them as a means to gauge the performance of his horses.[2]
There are twelve markers in all, of which eleven are those originally placed by Pike. Marker #6 was destroyed during road works on US 1 shortly after World War II, and was replaced by a similar marker fashioned out of red granite; Pike's original markers are all gray granite, with inscriptions painted in red on a white background. All of the markers are located on the east side of US 1.[2]