William Arden

Myst Dancing Devil-Htc (The Three Investigators, #25)

Myst Headles Horse-Hch (The Three Investigators, #26) (The Three Investigators, #26) (The Three Investigators, #26)

SEC Crooked Cat-Htchck (The Three Investigators, #13)

Myst Deadly Dbl-Htck-P (The Three Investigators, #28)

Mystery of the Headless Horse (Alfred Hitchcock Books, #26) (The Three Investigators, #26)

Secret Phantom Lake Ah19 3in

Htck Mys Ded MN Rid-Pa (The Three Investigators)

Alfred Hitchcock and the Three Investigators in the Secret of Shark Reef

Htchck SEC Phntm Lk-Pa

Mystery of the Deadly Double (The Three Investigators, #28) (Alfred Hitchcock Books) (Alfred Hitchcock Books) (Alfred Hitchcock Books)

Alfred Hitchcock and the Three Investigators in the Mystery of the Laughing Shadow

Mystery of the Dead Man's Riddle (Alfred Hitchcock Books, #22)

Hchck Myst Deadly Double (Random House Picturebacks, #28)

Myst Moan Cave-Htck-Pa

Myst Shrink HS-Htck-Pa

Alfred Hitchcock and the Three Investigators in the Mystery of the Deadly Double

Hitck Mys Headless Horse (Random House Picturebacks, #26)

Mystery of the Dancing Devil (The Three Investigators, #25) (The Three Investigators, #25) (The Three Investigators, #25) (Alfred Hitchcock Books) (Alfred Hitchcock Books) (Alfred Hitchcock Books)

Alfred Hitchcock and the Three Investigators in the Mystery of the Headless Horse (Disney's Wonderful World of Reading, #26)

Secret of Phantom Lake (The Three Investigators) (Alfred Hitchcock Mysteries) (Alfred Hitchcock Books)

Htchck Mys Dancng Devl (The Three Investigators, #25)

Htchk Mys Dancng Devil (The Three Investigators, #25) (The Three Investigators, #25) (The Three Investigators, #25)

Deadly Legacy

Hchck Mys Dead Man Riddl (Pro Basketball Library, 9, #22)