"The American Geographical Society Library Digital Map Collection contains over 19,000 maps, ranging from early maps of Asia to historical maps of Wisconsin and Milwaukee, and other American cities, states, and national parks. The digital collection is under continuing development. "
"This collection consists of almost 40 East Asian maps, manuscripts, woodblock prints and rubbings, in Chinese, Japanese and Mongolian. It features all the ancient maps in East Asian languages in our holdings."
In addition, click on the collections tab to select other map collections held at Hong Kong University
The David Rumsey Map Collection was started over 35 years ago and contains more than 200,000 maps. The collection focuses on rare 16th through 21st century maps of North and South America, as well as maps of the World, Asia, Africa, Europe, and Oceania. The collection includes atlases, globes, wall maps, school geographies, pocket maps, books of exploration, maritime charts, and a variety of cartographic materials including pocket, wall, children's, and manuscript maps. Items range in date from around 1550 to the present.
Digitization of the collection began in 1996 and there are now over 126,000 items online, with new additions added regularly. The site is free and open to the public. Viewers can access high resolution images of maps that are extensively cataloged, and also to a variety of tools that allow users to compare, analyze, and view items in new and experimental ways.
The originals were donated to Stanford University.
This is the Digital Collections portal for the Leventhal map collection. It includes nearly 10,000 objects, primarily flat maps but also including some bound atlases, ephemera, and series. The Digital Collections portal features an advanced search for filtering material by date and theme, as well as many maps that have been georeferenced for display on top of a modern map layer. Leventhal Center also has an additional 300 atlases & books in the Internet Archive - https://archive.org/details/normanbleventhalmapcenter
More information about their collections is here - https://www.leventhalmap.org/collections/digital-collections/
"The Sanborn map collection consists of a uniform series of large-scale maps, dating from 1867 to the present and depicting the commercial, industrial, and residential sections of some twelve thousand cities and towns in the United States, Canada, and Mexico."
"The Asia-Pacific map collection is made up of over 35,000 topographic, cadastral, aeronautical, bathymetric, thematic and tourist maps. The collection has special emphasis on Asia, Australia and the Pacific. The Antique section of the collection covers maps, views and plans from the 17th, 18th and 19th centuries and includes the Kessler Collection."
"This collection consists of digitally reproduced images of paper maps from the Cornell University Library's Map Collection. Included are maps from locations around the world, ranging in date from the nineteenth century to the present. While this collection will continue to grow, it will still only represent a fraction of the 300,000 maps, atlases, and other forms of geospatial data that make up the Map Collection. Located in Olin Library, the Map Collection is open to the public."
Explore the digitized maps at the National Archives & Records Administration (NARA). Follow the link under "Research Online" to get to the digital maps.
"Maps and Mapping at The Claremont Colleges offers digital access to printed maps available at The Claremont Colleges Library Special Collections, as well as those available at Ella Strong Denison Library at Scripps College. This digital collection offers researchers access to a variety of maps that cover United States, California, and World geography, with a focus on the Pacific Ocean and Western Hemisphere, spanning the years 1542-1949. Highlighted in the collection are maps that depict California as an island, including maps that maintained the myth of California existing as an island long after the theory had been disproved."
An atlas created by a single author focusing on the Persion Gulf. "This Atlas collection is largely infographic not cartographic. .... All infographs, maps and their accompanying texts, statistics and data that are hosted by this Gulf/2000 web site are original, authored and produced by Dr. Michael Izady for the Atlas of the Islamic World and Vicinity."
"The gift of Ray R. Brennen '35, this collection is comprised of maps, atlases, land deeds, and books on cartography. Many of the sixty maps and atlases date to the late 18th century and represent the work of some of the finest mapmakers in Europe and America."
Archive of the maps produced ny National Geographic over the years. Leads to links where you can purchase maps, but if you click on the initial image of the map, you can usually zoom in on most to use them with a watermark online.
A membership driven site with a free version that allows access to fewer resources. Explore the past on an interactive map with a timeline. From their site: "Search for detailed high-resolution scanned maps and see what happened in your chosen place in the past."