Wikipedia:WikiProject Maps/Source materials
Wikimedia Commons has media related to Map resources.
In creating geographical maps for Wikipedia, it is often useful to have high-quality source material such as blank outline maps, Adobe Photoshop or GIMP-format images with layers, SVG files and so on. If you have such source material that you think may be helpful to other map authors, please feel free to upload it to Wikipedia and list it here.
U.S. Maps
- Image:USA CountiesSVG.zip: A zipped SVG file with detailed nationwide state and county borders.
- U.S. Congressional districts
General
- XPlanet is a good source
- OpenStreetMap
- FreeGIS
- GeoData