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A portion of the Featured Map of the Month, focusing on modern day Iran. It is labeled as Persia. To the bottom is a region called Luristan, with mountains along the southern edge. There's a line running across the entire area labeled "Southern Limit of Russian Sphere"

Map of the Month: May 2024

This month, we’re going to travel to the birthplace of civilization: Mesopotamia. The earliest known human settlements are found in the valleys of the Euphrates and Tigris Rivers, and they have had co...

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A zoom in on the Mississippi River, with the Arkansas river to the upper left. Arkansas is spelt how it's pronounced- with a W at the end.

Map of the Month: April 2024

The political boundaries of North America have gone through many changes. As part of New Spain, Central America was known as the Captaincy General of Guatemala, or the Kingdom of Guatemala. The territ...

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Screenshot of the 1918 National Parks and Monuments Online Web App showing a digitized version with information on Grand Canyon National Park shown.

New Web Application: 1918 National Parks and Monuments

A new Web App, 1918 National Parks and Monuments, is now live on ASU Geodata. This App digitizes a map of the National Park and Monument system in its infancy and overlays it across a modern map of th...

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A subsection of the National Parks and Monuments map showing a portion of the California-Nevada Border. Yosemite National Park and Sequoia National Park are prominent, with red boundaries separating them from the green national forest boundaries.

Map of the Month: March 2024

The United States National Park Service (NPS) currently administers 63 National Parks and 85 National Monuments, among the astonishing 423 total areas managed by the agency. That scope wasn’t always s...

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Section of the map showcasing the island of New Guinea. The western half was 'Netherlands New Guinea' while the eastern half was split in two with North East New Guinea to the north and the Australian state of Paupa to the south.

New Web Index: 1959 World Less Polar Regions

A new web map, 1959 World Less Polar Regions, is now live on ASU GeoData. The web map indexes a newly digitized series of maps produced by the Army Map Service in 1959. The maps depict the world at th...

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A zoom in on the troop positions to show them in greater detail. The names of regiments and divisions, as well as the names of their commanding officers can be seen, and descriptions of fortifications such as trenches and gun emplacements

Map of the Month: November 2023

In 1898, Cuba was in the midst of a bloody war for independence from Spain that had been raging for three years. American public opinion swayed dramatically towards support through the 1890s, especial...

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The Roosevelt Dam drawn in Blue on a 1934 Map by T.A. Hayden

Map of the Month: October 2023

Salt River Valley, Arizona, 1934. Cartography by T.A. Hayden. In 1934, the Phoenix valley was mostly farmland thanks to the incredibly successful damming of the Salt River wi...

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A selection from a topographic map showing contours for elevation within the Grand Canyon

Map of the Month: September 2023

The Grand Canyon is one of the modern natural wonders of the world. It’s been mapped countless times over the years, and is the second most visited national park in the United States. However, the map...

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Johnson’s California, Territories of New Mexico and Utah, Map depicting the Southwest U.S. Territories of New Mexico, Utah, and the States of California and Colorado as they were in 1862. Zoomed over modern day Arizona.

Map of the Month: August 2023

One hundred and sixty one years ago, the American Civil War was raging all across the country. During the height of this conflict, The Territory of Arizona was officially established in February of 18...

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