Top of page

Archive of all 456 Posts

Manuscript, pen-and-ink and watercolor map showing Boston Harbor in 1775

Virtual Orientation: Mapping America’s 250th Anniversary with Graphics

Posted by: Carissa Pastuch

This blog promotes the upcoming virtual orientation on Tuesday, June 9, 2026 at 3:00pm (ET) to discover some of our many collection materials related to the 250th anniversary of the United States. In celebration of this milestone, learn about our A250-themed partnership with the National Library Service for the Blind and Print Disabled (NLS).

people loading a bale of cotton into a compress

Calling the Cotton Press: Fire Insurance Maps of a Mississippi Delta Town

Posted by: Lena Mattson

Fire insurance maps reveal a lot about the industrial history of cities and towns of any size. Sanborn fire insurance maps of a particular Mississippi Delta town in 1925 reveal an economy based around the harvesting, refining, and transportation of cotton. These maps also hint at the life and work of the Black community in the Delta that made this economy possible, as well as some of the many achievements of that town’s community over the 20th century.

black and white photo of man sitting in front of a computer terminal

SYMAPping the Puget Sound: Exploring Early Techniques in Computer Cartography

Posted by: Meagan Snow

The 1970 Census was the first United States decennial census to be released in machine-readable format, allowing cartographers sudden access to large amounts of aggregated demographic data about the entire United States. This blog post explores early computer cartography mapping techniques that took advantage of the new census format, including SYMAP and SYMVU, as demonstrated in an atlas held by the Geography & Map Division titled “The Puget Sound Region: A Portfolio of Thematic Computer Maps.”