The Reverend George B. HItchcock House, a National HIstoric Landmark, will be open for tours starting May 1. The house now serves as an interpretive center of the life of an early pioneer and the escaping slaves who traveled the Underground Railroad to freedom. Guided tours are offered until September 30, Tuesday through Sunday, beginning at 1 p.m.. The last tour begins at 4:15 p.m. each day.