Secret Mark (Version 2)

Published as part of the 'Adventure Stories for Girls' series, 'Secret Mark' by Roy J. Snell follows Lucile, who discovers a young girl stealing valuable books from the University Library where she works. Faced with a moral dilemma, Lucile hesitates to report the theft, leading her and her roommate Florence on a thrilling adventure from Chicago to New York. This 1920s tale highlights themes of resourcefulness and courage as they navigate challenges to uncover the mystery behind the Secret Mark.