NEW YORK CITY

• NYC Planning Maps

• NYC Tax Maps and Building Information

• NYC Tax Photographs, 1940s

• NYC Tax Photographs, 1980s

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U.S. REGIONAL / NATIONAL

• USGS National Map 

• USGS Thematic Maps

• USGS Historic Topographic Maps

• USGS Topo View

• Atlas of the Historical Geography of the United States (1932)

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TRANSNATIONAL / GLOBAL

• Google

• Google Earth

• Snazzy Maps: Free Styles for Google maps

• Open Street Map (open source vector) 

• Library of Congress (LoC) Digital Collections

• LoC Panoramic Birdseye Maps

• Transatlantic Enslavement Database and Maps

• David Rumsey collection

• Global Wind