HISTORY RESOURCES AND RESEARCH TOOLS

USEFUL TOOLS
Calculate Duration Between Two Dates
Calculate Inflation; future value of yesteryear's dollars.
MAP TOOLS
|Map Radius || Map Area || Distance || Elevation || Coordinates || Map Area || 

GOOGLE EARTH DESKTOP (Fully-Functional) - Free
GOOGLE EARTH INTERNET (The Basics) - Free
EARTH POINT - cool tools for Google Earth
Digital Commons Network;100s of papers from worldwide universities & colleges.