-
由 O'Brien, Mary Barmeyer
出版 2003 -
由 Brown, Dee Alexander
出版 1971 -
由 Palmer, Rosemary Gudmundson
出版 2007 -
The Homestead Act of 1862a primary source history of the settlement of the American Heartland in the late 19th CenturyBook由 Porterfield, Jason
出版 2005 -
由 Schaefer, Ted, 1948-
出版 2007 -
A field guide to western birdsa completely new guide to field marks of all species found in North America west of the 100th meridian and north of MexicoBook由 Peterson, Roger Tory, 1908-1996
出版 1990