Donations. Guided tours $5; $2 (students with ID).
Thurs.-Sun. 10-4, early Apr.-late Dec. (also 4-5, Memorial Day-Labor Day). Guided tours are available by 2-week advance reservation Mon.-Wed. 10-4 (requires a minimum of five participants). Closed holidays and when exhibitions are being changed. Phone ahead to confirm schedule. Allow 1 hour minimum.