Colorado Parks & Wildlife Research Library

Once again Nancy Drew is involved in a mystery as she tries to locate an archaeologist who disappeared with the clues to a buried treasure.

Despite warnings from a stranger, Nancy sets out for France to search for a flight of 99 steps which may help solve the mystery of a weird dream and a possible case of blackmail.

A fiery glowing eye in a museum, the abduction of Ned, the code name Cyclops, and a pilotless helicopter draw Nancy and her friends into a dangerous investigation.

Nancy investigates two mysteries. In New York she seeks a missing Chinese girl who is in danger. She also goes to Hong Kong to find several missing beneficiaries to a will.

At a doll collector's request for help, a young sleuth searches for an old album, a lost doll, and a missing gypsy violinist.

Teenage detective Nancy Drew uses her courage and powers of deduction to solve the mysterious happenings in an old stone mansion. She recieved a phone call from her friend, Helen Corning. Helen says they were robbed, heard thumps in the night, and have heard strange music when no one has turned on the radio Helen begs Nancy to come to Twin Elms and try to solve the mystery.

Nancy encounters a mysterious saleswoman in a perfume shop, a curious man on the train, and then finds herself trying to decipher a strange code.

Nancy Drew's latest involvement in a mystery begins in her home town and concerns a synthetic sapphire with a spider embedded in it, and the strange disappearance of Ned Nickerson.

Summary: Nancy learns that Tammy Calloway, a former rodeo champion, has received threats that her horse, Renegade, will be destroyed, if Tammy comes out of retirement to compete in the annual Fourth of July rodeo.