J C Greenburg: 18 books

The evil Dr. Kron-Tox has kidnapped Uncle Al and whisked him away in his time machine! Luckily, Andrew has a time machine of his own. But like most of Andrew’s inventions, the Time-a-Tron doesn’t work quite right. It tumbles Andrew, Judy, and Thudd back to the very beginning of the universe! Will...

Some families are ARE a little too close! A shock from a numbfish has shrunk Andrew, Judy, and Thudd to microscopic size. Just when they think Uncle Al has rescued them, a mosquito bite injects them into his bloodstream! They travel to his lungs and pay a friendly visit to his mucous membranes. Will...

Andrew, Judy, and Thudd have escaped the dinosaurs only to find themselves surrounded by the woolly mammoths of the Ice Age! Can they locate their lost Uncle Al and travel back to their own time before the evil Dr. Kron-Tox puts his nefarious plan into action?

When Andrew’s latest invention, the Atom Sucker, goes haywire, Andrew and Judy are shrunk down to microscopic level! Andrew and Judy find themselves lost on their neighbor’s dog, where they encounter everything from colossal fleas to crab-like eyelash mites. Now they have to find their way back to the Atom Sucker and get unshrunk before it’s too late!

Thanks to an invention mishap Andrew, Judy, and Thudd have been shrunk down to the size of bugs. That’s a serious problem when they get lost in a deep, dark, and bat-filled cave. Bats love to eat bugs! Will Andrew, Judy, and Thudd find a light at the end of the cave? Or is that really a glowing insect just waiting to eat them?

Andrew, Judy, and Thudd have escaped the Big Bang only to find themselves trapped inside the Earth as it forms all around them! Meanwhile Uncle Al is stranded in the Ice Age. Somehow Andrew, Judy, and Thudd must fix their time machine and rescue Uncle Al—before he becomes dinner for a sabertooth...

Andrew, Judy, and Thudd have landed in the Australian rain forest. They must find a way to the river and Uncle Al, but they're still the size of bugs! They dodge rhinoceros beetles and tree kangaroos, dangle dangerously above the jaws of a carnivorous plant, and have a close encounter with a carpet python. Will they ever reach Uncle Al? Or will they be shrunken Down Under for good?

After escaping an underwater volcano, Andrew, Judy, and Thudd drive their submersible vehicle, the Water Bug, right down a whale’s throat! This is the second in a four-book set that will take the kids on a tour of undersea phenomena, from the Great Barrier Reef to the Mariana Trench to the inside of a whale, as they try to find their way home.

Andrew, his cousin Judy, and super-smart robot Thudd escape the bathtub–only to get flushed down the toilet! Now they have to find their way through a maze of pipes to the kitchen sink. But the kitchen is no place to be when you’re the size of a flea. Monster cockroaches scurry across the counter...

After getting unshrunk, Andrew, Judy, and Thudd take a much needed vacation to Hawaii. While making modifications to Uncle Al’s latest invention–the submarine-like Water Bug–Andrew ends up stranding himself, Judy, and Thudd underwater!Andrew Lost Under Water is the first in a four-book set that...

Andrew, Judy, and Thudd have escaped primordial Earth only to find themselves surrounded by huge–and hungry!–dinosaurs. Meanwhile Uncle Al is still stranded in the Ice Age. Somehow Andrew, Judy, and Thudd must fix their time machine and rescue Uncle Al–before he becomes a human ice cube! Kids,...

Andrew, Judy, and Thudd drive the Water Bug deep into the ocean, where the only light comes from strange glowing creatures. Just as they're passing over the deepest place on earth, the trusty Water Bug loses power! Now instead of saving the giant squids, Andrew, Judy, and Thudd will have to save themselves - or be lost on the bottom of the ocean forever!

When Andrew and Judy’s neighbor gives her dog a bath, microscopic Andrew and Judy find themselves washed off the dog and lost in the bathroom! They’ll have to use their wits–and Thudd’s storehouse of facts–if they’re to survive run-ins with mold, mildew, an ocean of soapy water, and a predatory spider on their way back to the Atom Sucker.

While in the Australian desert, ant-sized Andrew, his cousin Judy, and Thudd the robot are carried away by a dust-devil and face many dangerous creatures as they make their way back to Uncle Al.