Near Frasier Park, California I found proof that Yahoo! Maps uses material from the NAPP program, but post-colorized. You can clearly see the letters NAPP in one ground section ;)So Yahoo! have post-colorized the black & white footage from the NAPP (and possible NHAP) surveys - just like I did with the color_hack option for Virtual Earth.Cool.

Check out Yosemite-by far the best version...Now if a database could be built that would automatically switch to the service with the best coverage...http://mywebpages.comcast.net/geofa/pages/rxp-pilot.jpg