The David Rumsey Map Collection was started over 30 years ago and contains more than 150,000 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, wall maps, globes, 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 about 1550 to the present.
The British Library collection of maps, plans and views is one of the largest in the world, numbering some 4.5 million. They have one of the largest collections of maps, plans and topographical views in the world, numbering some 4.5 million, with a chronological spread of over 2,000 years.
The Beinecke Library has digitized more than 20,000 maps, which are available in the Beinecke’s Digital Library at http://brbl-dl.library.yale.edu/vufind/. For more information about this digitization project see the earlier announcement: http://web.library.yale.edu/news/2015/06/transfer-pre-1900-map-collection-beinecke-library