National Park Service Director Fran Mainella, front, and Secretary Gale Norton on National Public Lands Day promotion visit to the Chesapeake and Ohio Canal National Historical Park, Maryland, joining volunteers working on Lockhouse 8 renovation, sponsored by Park Service and Potomac Conservancy

Chicago citation style
Department of the Interior. National Business Center. Administrative Operations Directorate. Division of Employee and Public Services. Creative Communications Branch. Photographic Services. 2000-. National Park Service Director Fran Mainella, front, and Secretary Gale Norton on National Public Lands Day promotion visit to the Chesapeake and Ohio Canal National Historical Park, Maryland, joining volunteers working on Lockhouse 8 renovation, sponsored by Park Service and Potomac Conservancy. 2004-09-17. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/5623038. (Accessed June 25, 2018.)
APA citation style
Department of the Interior. National Business Center. Administrative Operations Directorate. Division of Employee and Public Services. Creative Communications Branch. Photographic Services. 2000-, (2004-09-17) National Park Service Director Fran Mainella, front, and Secretary Gale Norton on National Public Lands Day promotion visit to the Chesapeake and Ohio Canal National Historical Park, Maryland, joining volunteers working on Lockhouse 8 renovation, sponsored by Park Service and Potomac Conservancy. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/5623038
MLA citation style
Department of the Interior. National Business Center. Administrative Operations Directorate. Division of Employee and Public Services. Creative Communications Branch. Photographic Services. 2000-. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/5623038>.
Note: These citations are programmatically generated and may be incomplete.