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Government Web Resources Guide

Maps, GIS is a geographic information system (GIS) portal.

INFOMINE is a virtual library of Internet resources relevant to faculty, students, and research staff at the university level. Sponsored by the University of California, Riverside.

MapTech Online Maps
Free online resource for topographic maps, nautical and aeronautical charts, aerial photos and satellite images of the United States. Some historical maps are also provided.

National Ocean Service Data Explorer
The NOS Data Explorer serves as a portal to obtain NOS spatial data.

Perry-Castaneda Library Map Collection
Links to online maps arranged by subject. Produced by the University of Texas at Austin.

USGS Geography
Observations of the Earth with remote sensing satellites.

USGS Store
Locate and purchase topographical and other maps.