This collection focuses on rare 18th and 19th century North and South America maps, but there are also maps of the World, Europe, Asia, and Africa. Includes atlases, globes, school geographies, books, maritime charts, and a variety of separate maps.
"Google Earth lets you fly anywhere on Earth to view satellite imagery, maps, terrain, 3D buildings, from galaxies in outer space to the canyons of the ocean. You can explore rich geographical content, save your toured places, and share with others." - from Google Earth's site
Search the full-text of millions of books. Use as a "discovery" tool to find books on your topic. Books in the public domain (generally, pre-1923) are available full-text. Newer books offer limited viewing--from many pages to nothing.Note: This is just for books (and some magazines). To find scholarly articles, use Google Scholar.