From an email intro:
Ever wonder what our continent was like before Columbus set sail? Now at the Library of Congress you can delve into the early history and cultures of the Americas. “Exploring the Early Americas,” a new exhibition part of the Library of Congress Experience, features rare artifacts like the 1507 Waldseemueller map and 1516 Carta Marina. Paired together in an interactive display, the maps enable you to explore the significance of depicting the world newly enlarged by the presence of the Western Hemisphere. Experience the exhibition both in person and online.
Source: The Library of Congress
