National Geographic Map Archives – peruse the digital archive of NatGeo’s entire editorial cartography collection—every map ever published in the magazine since the first issue in October 1888. Click Wall Maps > Archive
Norman B. Leventhal Map & Education Center — located at the Boston Public Library, it has over 200,000 maps with a portal for over 1500 maps related to the American Revolutionary War
McMaster University Historical & Rare Maps — McMaster University Library (Ontario, Canada) possesses a rich collection of historical maps, ranging from rare, antique maps, to local historical materials and maps of theatres of war.
David Rumsey Historical Map Collection – The David Rumsey Historical Map Collection is one of the world’s largest private map collections. It has over 150,000 maps and cartographic items.
Washington Library — among the resources of the Fred W. Smith National Library for the Study of George Washington, and from other staff resources at George Washington’s Mount Vernon
Maps of the Past — The restored map library now consists of roughly 6,200 historical maps dating back to the sixteenth century; and their archives hold several thousand additional maps awaiting restoration
New World Cartographic — Huge collection of vintage historical and pictorial maps for sale
Harvard Map Collection — the oldest map collection in the United States, it holds some 400,000 maps and 6,000 atlases
United States Geological Survey — best geographic resource on the physical features of the American landscape, and its nearly 200,000 historical topographic maps are available to the public
Old Maps Online — easy-to-use searchable gateway to historical maps hosted online by repositories around the world
New York Public Library — nearly 9,000 pages from 162 atlases documenting New York City’s changing geography and built environment. The majority of these maps are fire insurance maps, some of the most detailed city maps ever published