Description
Item Description:Title from title screen (viewed on June 22, 2007).
Electronic resource.
Physical Description:xii, 168 pages : digital, PDF file.
Format:Mode of access: Internet from the NPS web site. Address as of 6/22/07: http://www.nps.gov/history/history/onlineb̲ooks/calo/plssh̲sr.pdf; current access is available via PURL.