Gilpin Avenue and Lincoln. N.W. Washington, DC 20001. Open 1 to 5 pm Sundays, May through October. Open by appointment only. Open Sunday 1-5 pm from Memorial Day to Columbus Day or by appointment.
Admission is free.
Open by appointment. Open all summer. Open daily from 1 - 4 pm. . Open any time on request, admission is free. Sundays Noon - 5.