Katie - May I suggest that you obtain a copy of the publication MUSEUM MISSION STATEMENTS: BUILDING A DISTINCT IDENTITY. The publication is full of case studies about museums that revised their missions, often as part of strategic planning. It is available for $20 from the American Association of Museums as one of the Professional Practice Series. You may be able to borrow a copy from a local institution.
Peter B. Tirrell, Associate Director Oklahoma Museum of Natural History The University of Oklahoma 1335 Asp Avenue Norman, Oklahoma 73019-6071 tel: (405) 325-1009 Fax: (405) 325-7699 OMNH web page:
http://www.omnh.ou.edu/ also: president, Association of College and University Museums and Galleries(ACUMG)
www.omnh.ou.edu/acumg/