36 books • 7 series
La Serpiente
Federal Bureau of Investigation (Agents of Government)
National Aeronautics and Space Administration (Agents of Government)
Peace Corps (Agents of Government)
Environmental Protection Agency (Agents of Government)
Sherlock Holmes and the Missing Helmets
Important Figures (War on Terror)
Causes (War on Terror)
Ideology and Information (War on Terror)
Controversies (War on Terror)
New Jersey (This Land Called America)
New Hampshire (This Land Called America)
Rhode Island (This Land Called America)
Snakes (Living Wild (Hardcover))
Wolves (Living Wild (Hardcover))
North Carolina (This Land Called America)
Delaware (This Land Called America)
Massachusetts (This Land Called America)
Florida (This Land Called America)
Cloning: Dolly the Sheep (What in the World?)
Missouri (This Land Called America)
The Beatles: Sgt. Pepper's Lonely Hearts Club Band (What in the World?)
Maryland (This Land Called America)
Pluto (My First Look At: Planets)