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The Changing Mexico-U.S. Border

Stretching nearly 2,000 miles from the Pacific Coast to the Gulf of Mexico, the Mexico-U.S. border is the world’s single most crossed international boundary. With over a billion dollars worth of goods moving between the countries every day and 11 million people living within the border region, the history of the Mexico-U.S. boundary line is worth […]

Putting Boston on the Map: Land Reclamation and the Growth of a City

Today’s guest post is from Tim St. Onge, a cartographer in the Geography and Map Division. Tim holds an undergraduate degree in Geography from the University of Mary Washington and a Master’s degree in Geographic Information Science from Clark University. The Back Bay neighborhood of Boston is home to some of the city’s most famous […]

In Maudslay’s Shadow: Imaging Pre-Columbian Mesoamerica

The Library of Congress’ Geography and Map Division is home to a large collection of Pre-Columbian archaeological artifacts donated by the collector Jay I. Kislak, many of which are on display as part of the Exploring the Early Americas Exhibit in the Thomas Jefferson Building here in Washington, DC. The artifacts that make up the […]

Researching Climate Change in the Geography and Map Division

As the 2015 United Nations Climate Change Conference (COP21) began this week, it is important for all of us to study how we are affected by global climate change. According to the Environmental Protection Agency (EPA), future changes to our Earth include a warmer atmosphere and oceans, more acidic oceans, higher sea levels, and larger […]

Einstein at 100: Mapping the Universe

Last week we passed an important milestone in the history of science. November 25th, 2015, marks one hundred years since Albert Einstein delivered his now infamous address to the Prussian Academy of Sciences, during which he laid out the series of equations which lie at the heart of his General Theory of Relativity. This anniversary […]

Our Next Generation

Who are the next generation of cartographers? What draws them to this part science, part artistic expression, part design discipline? Many cartographers of the past and those working today often talk about an early love for maps and how something about their graphic form drew them to the field. Some of the most famous mapmakers, […]

“Full of Bogs and Poisonous Fruits”: Early Maps of Florida

Florida: home to sunshine, oranges, spring breakers, and snowbirds. Or, in the words of the 16th century Spanish explorer, Hernando de Soto: “full of bogs and poisonous fruits, barren, and the worst country that is warmed by the sun.” For over a hundred years, between Columbus’ initial contact in the Bahamas (1492) and the English […]

Computing Space 0: From Hypersurfaces to Algorithms: Saving Early Computer Cartography at the Library of Congress

Recently, the Geography and Map Division has undertaken a large scale project to collect manuscripts, technical information,  algorithms, software, and hardware from the earliest days of computer cartography. This project, which is being directed by the author, began as a series of lectures for graduate students that I gave at Johns Hopkins University on the […]

Digitizing 2.5 Million Maps: An Analyst’s View

Today’s guest post is from Mike Schoelen, a Post-Graduate GIS Research Fellow in the Geography and Map Division. This post was inspired by work on the Geographic Hotspot Dynamic Indexing Project and collaboration with Amanda Brioche, Erin Kelly, and Evan Neuwirth. Mike is a born and raised Marylander. After completing his undergraduate degree at Frostburg […]