| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| National Geographic's Asteroids: Deadly Impact | 978-0-7922-5206-1 | 1997 | Al Giddings · Alexander Grasshoff · Bud Wiser |
| National Geographic's Australia's Aborigines | 630447394X | 1997 | Al Giddings · Alexander Grasshoff · Bud Wiser |
| National Geographic's Dolphins: The Wild Side | 978-0-7922-5477-5 | 1999 | Al Giddings · Alexander Grasshoff · Bud Wiser |
| National Geographic's In the Shadow of Vesuvius | 6304475152 | 1998 | Al Giddings · Alexander Grasshoff · Bud Wiser |
| National Geographic's Killer Whales: Wolves of the Sea | 6304475225 | 1997 | Al Giddings · Alexander Grasshoff · Bud Wiser |
| National Geographic's Land of the Anaconda | 978-0-7922-9617-1 | 1999 | Al Giddings · Alexander Grasshoff · Bud Wiser |
| National Geographic's Lost Kingdoms of the Maya | 6304475306 | 1997 | Al Giddings · Alexander Grasshoff · Bud Wiser |
| National Geographic's Really Wild Animals: Awesome Animal Builders | 978-0-7922-5191-0 | 1997 | Al Giddings · Alexander Grasshoff · Bud Wiser |
| National Geographic's Really Wild Animals: Dinosaurs and Other Creature Features | 6304475705 | 1997 | Al Giddings · Alexander Grasshoff · Bud Wiser |
| National Geographic's Sea Nasties with Leslie Nielsen | 6304779712 | 1998 | Al Giddings · Alexander Grasshoff · Bud Wiser |
| National Geographic's The Incredible Human Machine | 630447430X | 1997 | Al Giddings · Alexander Grasshoff · Bud Wiser |
| National Geographic's The Sharks | 6304474520 | 1998 | Al Giddings · Alexander Grasshoff · Bud Wiser |
| National Geographic's Those Wonderful Dogs | 6304475934 | 1997 | Al Giddings · Alexander Grasshoff · Bud Wiser |
| National Geographic's Volcano: Nature's Inferno | 978-0-7922-5201-6 | 1997 | Al Giddings · Alexander Grasshoff · Bud Wiser |