Ortho and Elevation sources

[Chip Taylor]

I am looking for commercial grade sources for ortho and digital photos as
well as elevation data.  I would prefer a WFS or WMS source.  We presently
use USGS and Terraserver data but we are looking for quality and currency on
the order of that found in Google Maps, etc.   If you know of vendors for
such data, any leads you could provide would be appreciated.

Chip Taylor
Prepared Response, Inc