Robert Papp

"Ten-year-old Lanie loves science and nature, but she has a problem: she's an "outside" girl with an "inside" family. She longs get out and go camping, but they all want to stay home. ... But when her favorite aunt comes to stay, Lanie discovers that the wonders of nature are everywhere-even in her own backyard."--Publisher.

The Aldens investigate the rumors of ghosts, disappearing props and a haunted seat in the Trap-Door Theater.

Eleven-year-old Gave enlists in the Union Army in Pennsylvania along with his older brother Davy and, as a bugler, does his best to protect Davy during the Battle of Gettysburg.

The Aldens help out at a medieval fair and try to find a valuable sword which has been stolen from the fair.

The Boxcar Children have been choosen to compete against another team to look for clues on a game show.

Using the alphabet format, the history, care, behaviour, and mystery of cats is presented. Feline facts are also included.

The four Alden children, aged six to fourteen, uncover a mystery while volunteering at a food pantry for the needy.

The Aldens investigate when an old wooden mask they have found is stolen.

Henry, Jessie, Violet, and Benny experience the fun of a drive-in movie theater when they visit a friend who owns one, but when strange pranks interrupt their fun, and a ghost is spotting walking the grounds, they wonder if the teenage staff might be hiding a secret.

The Aldens visit Grandfather's friend at the Ogopogo Retreat and aided by puzzling clues, embark on a treasure hunt to prevent the retreat from being sold.