-
by
John Muir
1960, Sierra Club
-
by
Stewart L. Udall
1966, Putnam
-
by
Reader's Digest Association
1989, Reader's Digest Association
-
by
Steven Buskirk
1978, KC Publications, Kc Pubns
-
by
Dorothy Krell
1980, Lane Pub. Co.
-
by
National Parks and Conservation Association
1981, The National Parks & Conservation Association
-
by
Aubrey L. Haines
1977, Yellowstone Library and Museum Association
-
by
Jeffrey P. Schaffer
1989, Wilderness Press
-
by
Basil Charles Wood
1972, Lane Magazine & Book Co.
-
by
Barbara Decker,
Robert Decker
September 15, 1999, Double Decker Pr