The Mines of Colorado.
New York: Promontory, 1974. Reprint of the 1867 edition. Hardcover, in dust jacket.
New York: Promontory, 1974. Reprint of the 1867 edition. Hardcover, in dust jacket.
Western Horseman, 1996. First edition, one of 1000 copies, signed by the author.
Grace and St. Stephen's Episcopal Church, 2011. First edition, first printing.
William Morrow, 1976. First edition.
Fulcrum, 2006. First edition, first printing. Red cloth backed photographic boards, no dust jacket.
Hinsdale County Historical Society, 1996. Revised 3rd edition. Dark blue cloth, no dust jacket.
W. W. Norton, 2019. First edition, first printing.
Register College of Journalism, 1987. Reprint. Green cloth, no dust jacket.
The Brown Palace Hotel, 2003. First edition, first printing. Hardcover in dust jacket.
Sage, 1960. First edition, first printing. Signed by both authors.
Crown, 2012. First edition, first printing.
Westcliffe, 2008. First edition, first printing.
Jostens, 2001. First edition, first printing.
Courtright Publishing, 1936. Facsimile reprint. Black pebble cloth. Inscribed, "Compliments of Courtright Publ. Co, E. K. Koon."
Xlibris, 2004. First edition, first printing.
Big Mountain Press, 1960. First edition; review copy.
Pruett, 1989. First edition, first printing.
National Railway Historical Soc. 1975. Second edition, first printing.
Verbal Imagery, 1975. First edition, first printing.
U. Press of Colorado, 1993. First edition, first printing.
Big Mountain Press, 1961. First edition, first printing. Blue cloth, no dust jacket.
Texas A&M U., 1977. First edition, first printing.
Crown, 2016. First edition, first printing. Hardcover, in dust jacket.
privately published, 2004. First edition. Glazed boards, no dust jacket. Signed by the authors.
Johnson Publishing Company, 1980. First edition, first printing. Signed by Sandy Hume.