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Historical news

Historic map showing Oregon and eastern Missouri Territory. The bold, dashed borders reflect the 1849 boundaries between territories established by the Treaty of Guadalupe Hidalgo. Solid, bold lines reflect rivers and tributaries of the territories with several dozen labels of the indigenous tribes located in the region.

Map of the Month: February 2022

Our February Map of the Month is an early edition of this map of “Oregon, Upper California, and New Mexico” published in 1849. It depicts the western United States shortly after the 1848 Treaty of Gua...

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Map of Mexico and Central American nations featuring color-coded regions denoting speakers of different Indigenous languages

Map of the Month: April 2021

Our April Map of the Month is this 1909 Linguistic Map of Mexico and Central America by Cyrus Thomas and J.R. Swanton. It displays the geographic distribution of a variety of Mesoamerican languages an...

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Poors Railroad and Utilities Maps index, magnified to midwest and northeastern United States.

New Map Collection and Index: Poor’s Railroad and Utilities Maps

The index for our new digital image collection, the Poor’s Railroad and Utilities Maps collection, is available to the public here. ...

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Strip Maps of Central Phoenix

New Map Collection and Index: Strip Maps of Central Phoenix

The index of our latest digital image collection, Strip Maps of Central Phoenix, is now available to the public in this interactive web map. Geographic Coverage: Phoenix, Arizona, United States Tim...

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