Using WMS servers in Google Earth entry by benstern 8/20/2007 2:25 AM
Google Earth has the remarkably useful ability to use layers in WMS Servers. These layers greatly extend the functionality of Google Earth. You can display USGS data like quads and topo maps and other great layers.
Notice the scroll bar, it gives you an idea of the amount of layers on that WMS server: (btw that is the National Map WMS server) http://www.thespudmall.com/wms3.jpg