- EcoFootprint of Nations
- EcoFootprint of Nations pdf
- EcoFootprint of Nations II
- EcoFootprint of Nations II pdf
- World Population
- World Population pdf
- Your Acres and Your Cows
- Your Acres and Your Cows pdf
- Your Acres and Your Cows II
- YourAcres and Your Cows II pdf
- CO2 and Gas Mileage
- CO2 and Gas Mileage pdf
- Electric Vehicles (EVs)
- Electric Vehicles (EVs) pdf