While visiting a Navaho Indian reservation in New Mexico, the Aldens try to save a forest under threat of development by proving it is the site of a lost, buried village, but someone is sabotaging their dig.

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 used to live alone in a boxcar. Now they have a home with their grandfather, and they're fixing up their boxcar so they can ride it in the big Greenfield Founder's Day parade. There's just one problem. Someone has stolen the boxcar with their dog, Watch, in it! If they can only find the missing boxcar, it...

"Cousin Alice is running for mayor, and the Boxcar Children must find out which of her opponents is using sneaky tricks to win the race!"--Provided by publisher.