Plný text je přístupný pouze z počítačů Ostravské univerzity
None published, 2002.
Some issues combined. Vol. 2, no. 2 skipped in numbering. Issues for summer 1999- have chronological designation only.
Electronic reproduction. [S.l.] : HathiTrust Digital Library, 2010.
Master and use copy. Digital master created according to Benchmark for Faithful Digital Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002. http://purl.oclc.org/DLF/benchrepro0212
Issued by: National Center for Cultural Resources, <fall 2003>-spring 2005 ; by: National Park Service, summer 2005-
Latest issue consulted: Winter 2011 (publisher’s Web site, viewed June 5, 2014).