The Factbook provides information on the history, people, government, economy, energy, geography, communications, transportation, military, and transnational issues for 267 world entities.
"The David Rumsey Historical Map Collection has over 17,400 maps online. The collection focuses on rare 18th and 19th century North American and South American maps."
"The Geography and Map Division of the Library of Congress holds more than 4.5 million items, of which Map Collections represents only a small fraction, those that have been converted to digital form."
The National Atlas is an interactive map with thematic layers. One can designate topics of interest and set a specific geographic area. Publications ended in 2014, thus data herein is archived.