Later in life, Coburn continued to live in Skowhegan at the family home where she was born. This is located at the intersection of Elm and Pleasant streets near the banks of the Kennebec River. In 1936, at eighty years of age, she purchased a vacant cottage on the south side of Elm Street, across from her home. She added a wing as a museum room and a repository for her writings and her research papers. Many early town records and maps filled this room as well as historic documents and a library of historical research books