This animation is taken from the interactive data visualization of the Library of Congress' "Chronicling America" directory of US newspapers. It shows all newspapers in Spanish in the US from 1690 to 2011. View the full visualization at ruralwest.stanford.edu/newspapers. Created by the Rural West Initiative of the Bill Lane Center for the American West, Stanford University. Visualization by Dan Chang, Krissy Clark, Yuankai Ge, Geoff McGhee, Yinfeng Qin and Jason Wang.