Mode of access: Internet at the Public Use Statistics Office web site. Previously available as of 5/29/03: http://www2.nature.nps.gov/stats/.
Vols. for 1990-<1993> issued by: Socio-Economic Studies Division, National Park Service; <1996> by: Public Use Statistics Program Center; 1997-2008 by: Public Use Statistics Office, National Park Service, Dept. of Interior.
Issued jointly by: National Park Service, Social Science Division, Public Use Statistics Office and: U.S. Dept. of the Interior, National Park Service, Natural Resource Program Center, 2009-2010; and: U.S. Dept. of the Interior, National Park Service, Natural Resource Stewardship and Science, 2011-