The Clue of the Velvet Mask #30- Carolyn Keene 1953 Grosset & Dunlap vintage HBDJ Tryon Edwards and environmental control in buildings

and environmental control in buildings

Three volumes

Or that a gnome is seven times as strong as a human

Series: (Dune #7)

Hollister has been invited to New York as consultant to a toy manufacturer who is trying to perfect a toy called the “Soaring Satellite

The Clue of the Velvet Mask #30- Carolyn Keene 1953 Grosset & Dunlap vintage HBDJ Tryon Edwards and environmental control in buildingsCondition: Acceptable: Signs of wear and consistent use. Dust jacket has a small tear near bottom of front cover with creasing. Few additional small chips and tears. See images for the condition of this book. Blurb: A masquerade party quickly turns into a mystery when Nancy and Ned spy an enigmatic man in a black cloak and an exotic woman in a glittering Javanese costume. Are they members of the gang of wily thieves who sneak into parties hosted by