The Library of Congress has custody of the largest and most comprehensive cartographic collection in the world with collections numbering over 5.5 million maps, 80,000 atlases, 6,000 reference works, over 500 globes and globe gores, 3,000 raised relief models, and a large number of cartographic materials in other formats, including over 19,000 cds/dvds. See how WPBeginner is funded, why it matters, and how you can support us. Read ourCookie Policyto learn more. Normally, when you login, WordPress validates your username and password and then sets a login cookie in your browser. Always make sure to load your applications JavaScript bundle using