John Ross, a British naval officer led three Arctic expeditions. In 1818 and 1829, he led expeditions to find the Northwest Passage. In 1850, he led a rescue mission to find survivors from Sir John Franklin's lost expedition. This post features maps related to John Ross's Arctic explorations.
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.”
Around 200 million years ago, the supercontinent of Pangaea began to break apart into the continents we know today. This post will explore the discovery of this continental drift theory through maps in the Library’s collections.