| Author |
Title |
Publisher |
Year |
| Flanagan, Mike |
The Old West, Day by Day |
New York: Facts on File, Inc. |
1995 |
| Schweikart & Birzer |
The American West |
John Wiley & Sons, Inc. |
2003 |
| Clark, Judith Freeman |
America's Gilded Age |
New York: Facts on File, Inc. |
1992 |
| Schlesinger, Jr., Arthur M. |
The Almanac of American History |
The Putnam Publishing Group |
1983 |
| Bowers, Q. David |
U.S. Liberty Head $20 Double Eagles. The Gilded Age of Coinage |
Stack's Bowers Galleries |
2014 |
| Foner & Garraty |
The Reader's Companion to American History |
Boston: Houghton Mifflin Company |
1991 |
| Rogers C.B. Morton |
Historical Statistics of the United States, Colonial Times to 1970 |
U.S. Department of Commerce |
1975 |
| http://en.m.wikipedia.org |
Wikipedia |
|
2014 |
