Fișier:USA Territorial Growth 1850.jpgMap of U.S. Territorial Growth (1850) from the Perry-Castañeda Library Map Collection, "...the maps scanned by the University of Texas Libraries and served
Fișier:USA Territorial Growth 1820.jpgOther versions: English Italian In arancione scuro gli stati componenti gli USA, in arancione chiaro la Spagna coloniale, in verde scuro i territori ancora
Fișier:USA Territorial Growth 1775.jpgDescriptionUSA Territorial Growth 1775.jpg 1970 USGS map of US territorial growth as of 1775 Date January 2010 Source Esemono Author USGS Permission (Reusing