Penny Nichols and the Mystery of the Lost Key is the second volume in the Penny Nichols series, from 1936. All four books in the series were written by the prolific Mildred A. Wirt (Nancy Drew, Penny Parker, Kay Tracey) from 1936 to 1939 under the pseudonym Joan Clark. Penny Nichols is the daughter of a detective father and like father, like daughter, she naturally gravitates toward the mysterious. According to research at gutenberg.org, these books are in the public domain in the United States.
Book publisher: The Goldsmith Company, Chicago
Book copyright: 1936
Book edition: First edition, back of jacket lists first three Penny Nichols books, blue cover
Size: 5″ x 7-5/8″
Dust jacket: Yes
Digital edition © 2011 Curtis Philips. All Rights Reserved.