The Information Center of the Environment and the US National Park Service (NPS) have developed a "preliminary" data base of vascular plants and vertebrates located on National Park Service Lands. Although the database is not a complete list of species residing on NPS lands, it contains relatively complete lists for both small and large parks. Users can search for plants and animals by species or park name. Within each park, one can search a list of species by taxa (e.g., birds, mammals, fish, etc.) and then learn in what other parks that species is found. Links to the home pages for all NPS property (from American Samoa to Zion National Park) are featured. Both plant and animal databases are available for downloading for Windows or DOS users (.exe).