TOLEDO, Ohio -- Typewriters and a desk from the home of the original author of the Nancy Drew mystery books are going up for auction in Ohio.

The auction Sunday in Toledo will feature a lifetime of keepsakes that belonged to Mildred Wirt Benson. She wrote 23 of the 30 original Nancy Drew stories using the pseudonym Carolyn Keene.

Benson died in 2002 and left her belongings to her daughter, who died this year.

The auction house handling the sale says many of the items, including autographed posters and awards, came from Benson's home office.

Few people knew Benson was the writer behind the early Nancy Drew stories until 1980 because she had signed a secrecy contract that wouldn't allow her to publicly reveal her identity. She was paid $125 per book.