Editing Gadsden Purchase (section)

== Bibliography ==
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* {{cite book |author-link = Richard Kluger |last = Kluger |first = Richard |title = Seizing Destiny: How America Grew From Sea to Shining Sea |year = 2007 |location = New York |publisher = Alfred A. Knopf |isbn = 978-0375413414 |url = https://archive.org/details/seizingdestinyho00klug }}
* {{cite book |author-link = Robert E. May |last = May |first = Robert E.|title = The Southern Dream of a Caribbean Empire, 1854–1861 |year = 1973 |location = Baton Rouge, LA |publisher = Louisiana State University Press |isbn = 978-0807100516 |url = https://books.google.com/books?id=DFZsAAAAMAAJ }}
* {{cite book |last = Nevins |first = Allan |title = Ordeal of the Union: A House Dividing 1852–1857 |year = 1947 |oclc=69655131 }}
* {{cite book |last=Nichols |first = Roy Franklin |title=Franklin Pierce: Young Hickory of the Granite Hills |year= 1969 |edition=2nd | oclc=33126738}}
* {{cite book |last=Richards |first=Leonard L. |title=The California Gold Rush and the Coming of the Civil War |year=2007 |location=New York |publisher=Alfred A. Knopf |isbn=978-0307265203 |url=https://archive.org/details/californiagoldru00ric_923 }}
* {{cite magazine |last = Roberson |first = Jere W. |title = The South and the Pacific Railroad, 1845–1855 |magazine = [[The Western Historical Quarterly]] |volume=5 |issue=2 |date=April 1974 |pages=163–186 |jstor=967035 }}
{{refend}}