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From the old newspaper files: Calabasas in the Gadsen Purchase
Gadsden Purchase - Wikipedia
The Gadsden Purchase and a failed attempt at a southern railroad
This1800s adventurer was first to map the Gadsden Purchase
The Gadsden Purchase - History Today
Gadsden Purchase | History, Facts, & Map | Britannica
Gadsden Purchase - Encyclopedia.com
Gadsden Purchase, - Office of the Historian
Gadsden Purchase, Summary, Facts Significance - American …
HISTORY OF ARIZONA AND NEW MEXICO.CHAPTER XX. THE GADSDEN PURCHASE …