Records for Theodore Lincoln Post 150, Grand Army of the Republic, G.A.R., are available only for 1897-1900, so the early history of the organization, officers, members and activities is unknown. Meetings were held in the building adjacent to Gardner's store at one time and later, in the building on Store Hill that eventually became, among other things, Jessie Smith's dry goods store. Across the street, near the house later owned by Mr. and Mrs. Donald Phinney, was the cannon house. Judging from an account which the Post had at Gardner's store, monthly meetings were held and refreshments were served. Items purchased included 5 lb. pilot bread for 45 cents; 3 lb. sugar, 18 cents; and 1 lb coffee, 30 cents. In response to an inquiry about the price of flags, Wm. H. Smith, Asst. Quartermaster General, advised G.A.R. Post 150 that 8 x 14 flags could be obtained for $2.75 per gross, and 12 x 18 ones for $4.00 per gross. In 1900 there was correspondence between George Hayward, Post Commander, and John Richards, the State Adjutant General, regarding the cannon, a six-pounder field piece, which the G.A. R. had in Dennysville. Since pieces that had long been without repair were dangerous, the local Post complied with the request to ship its cannon to Augusta. The list of graves to be decorated May 30, 1900 contained thirty-nine names of Civil War veterans who had "joined the Grand Army above." For a few years, the building housed the Grammar School students in the upstairs hall. (Later, Jessie Smith's dry good store and eventually, occupied by tenants.

Store Hill after 1909