Nancy Drew #18 Mystery at the Moss-Covered Mansion – First Edition Identification Guide
The Mystery at the Moss-Covered Mansion is the eighteenth volume in the Nancy Drew Mystery Stories series published by Grossett & Dunlap, and was first published in 1941. The original text was written by ghostwriter Mildred Wirt Benson, based upon a plot outline from Stratemeyer Syndicate co-owner Harriet Stratemeyer Adams.