You may examine a stack of co-registered images of the Grand Island area with a tool called DataSlate. There are 11 other data sets included with this application including Omaha and Harlan County. Examine locations, compare distances, see landmarks and topographical features.

Tons of Data - movies, vrml's, dem's... Images are available from UNL and Virtual Nebraska.

CASDE at JPL

Virtual Nebraska

VistaPro Images of Other States - South Dakota, Washington, Arizona, Southern, Central and Northern California

Virtual California

Microsoft's Terraserver contains USGS and Russian Spy Satellite Data. Each image contains a distance scale and the capability for magnification and image capture.