When the Aldens visit Yellowstone they discover a map showing the way to an old cabin where gold is supposedly hidden, but they encounter lots of interference in their attempts to hike the trail.
One warm night four children stood in front of a bakery. No one knew them. No one knew where they had come from. Henry, Jessie, Violet and Benny are orphans.They discover an old red boxcar that provides them shelter from the storm.
While visiting Chicago with their grandfather, the Alden children begin receiving mysterious clues to a treasure hunt. Includes related puzzles, games, and activities.
While helping fix up the old house their cousins have bought, the Aldens hear stories about its being haunted and find evidence suggesting that there may be a ghost there.
When their grandfather arranges for them to spend two weeks at Sunny Oaks, the four Alden children enjoy settling into the routines of farm life but become suspicious about a mysterious horse locked in the stables.
While spending their winter vacation at Snow Haven Lodge, the Boxcar Children sign up to compete in the snow events. But no sooner has the competion begun, than the children have a mystery to solve!
The Boxcar Children are going to a dog show. They meet all kinds of dogs, from a spotted Dalmatian to a big, hairy sheepdog. But then strange things start happening at the dog show, and no one knows why. Can the children solve the mystery and save the day?
When their favorite pizza restaurant almost goes out of business, the Alden children try to help their friends stay open while they find out who is behind all their problems.
While on a camping trip with their grandfather, the Alden children try to find out about the loud music and missing food that threatens to scare away other campers.
While on a cruise with their grandfather, the Alden children help discover who is behind the mysterious troubles of the ship--disconnected phone lines, engine trouble, a man overboard--and still have fun sightseeing, eating, and swimming.
While visiting the seaport town of Ragged Cove, Massachusetts, the Alden children find the ship's log of the Flying Cloud, shipwrecked in 1869, supposedly during a mutiny.
While canoeing and backpacking near Timberwolf Lake, the Aldens receive strange warnings to stay away from the area and stumble upon clues to a missing cache of stolen coins.