This post features maps of the World's Columbian Exposition that took place in 1893. Images of a guide map, souvenir maps, floor plans, and bird's eye views are included in the post.
The deepest point in the Atlantic Ocean can be found about 100 miles north of Puerto Rico, in a trench where two tectonic plates meet. This post discusses the Puerto Rico Trench's unique geology and efforts to map it.
This blog post highlights unusual maps found in the Geography and Map Division collections including a chart of port cities, a history of the Civil War, and a railroad organization chart.
While Amos Doolittle is best known for his accurate scenes of the Battles of Lexington and Concord, his map engravings, capturing the early years of the new independent nation, deserve recognition as well.