Keystone Square Museum will be closed Monday in observance of Labor Day.

The museum will be open Saturday from 10 a.m. to 2 p.m.

Regular hours resume Sept. 6 from 10 a.m. to 2 p.m., and again Sept. 8 from 10 a.m. to noon.

Contact the museum, at 303 S. Western, at 556- 2224. Special tours also may be arranged by telephone.