In a search for the missing Willard Grafton, Frank Hardy and younger brother Joe, encounter a gang of criminals intent on defrauding the US government, and are lead across California and even into Mexico.
In a search for the missing Willard Grafton, Frank Hardy and younger brother Joe, encounter a gang of criminals intent on defrauding the US government, and are lead across California and even into Mexico.
The Aldens are helping one of Grandfather's friends break a world record by building the world's largest yo-yo! But someone follows them, and then the plans for the yo-yo turn up missing. Someone is trying to sabotage the yo-yo before it's launched!
Talk about a BIG catch! The 25-foot squid hauled in by a fishing boat off the coast of New Zealand in December 1997 was one of the most amazing stories of that year! Here's a fascinating look at the giant squid, cephalopods in general, and the implications of this extra-ordinary discovery--written in conjunction with The American Museum of Natural History.
Talk about a BIG catch! The 25-foot squid hauled in by a fishing boat off the coast of New Zealand in December 1997 was one of the most amazing stories of that year! Here's a fascinating look at the giant squid, cephalopods in general, and the implications of this extra-ordinary discovery--written in conjunction with The American Museum of Natural History.
The Aldens are helping one of Grandfather's friends break a world record by building the world's largest yo-yo! But someone follows them, and then the plans for the yo-yo turn up missing. Someone is trying to sabotage the yo-yo before it's launched!
Paperback
(HarperCollins Publishers, June 12, 1986)
The Hardy boys travel to Mexico to solve the mystery of a missing plane and its passengers. Their only clues are giant desert drawings made by Native Americans hundreds of years ago.