What we know
Marr: 'The Glen Grove post office was established in November of 1869 at George Robinson's place', a halfway stage stop with the house as hotel and the barn for changing horses. That this 1880s homestead is the 1869 'place' is an inference, so the Glen Grove marker stays at the school.
Where it was
Center of Sec. 25, T9S R68W, where Elizabeth A. Robinson's four homestead forties meet (final proof, Castle Rock Journal, April 20, 1887).
Placed from a written description, such as a land section, a distance from a landmark or an old survey note.
Sources
Sources are named in the text above. Numbers such as S-0080 refer to our source list. Most newspaper quotations were read in the Colorado Historic Newspapers Collection. Long quotations from recent books are shortened here.