If someone can figure out how to attach to a Arcserver service there are very current aerial photos covering most of the US that are in the public domain available from the US Dept. of Agriculture here -> http://gis.apfo.usda.gov/arcgis/services
OpenStreetMap
If someone can figure out how to attach to a Arcserver service there are very current aerial photos covering most of the US that are in the public domain available from the US Dept. of Agriculture here -> http://gis.apfo.usda.gov/arcgis/services
Discussion
Comment from SamatJain on 11 July 2010 at 08:30
You can actually download almost all the imagery at the USDA geospatial gateway:
http://datagateway.nrcs.usda.gov/
I've downloaded a bit, converted the proprietary MrSID files to GeoTIFFs, and then the GeoTIFF into a Google/TMS-style file structure that can be used by Potlatch, Merkaartor, etc. I'm working on a tutorial…
Comment from davetoo on 13 July 2010 at 17:27
NAIP imagery is available by WMS, as described here:
http://seamless.usgs.gov/wms_services.php?layerid=17