Dr. Holton
The Gilded Sarcophagus (1967)
The Cup of Thanatos (1968)
The Lotus Vellum (1970)
The Thirteenth Treasure (1972)
A Touch of Myrrh (1974)
The Cup of Thanatos (1968)
The Lotus Vellum (1970)
The Thirteenth Treasure (1972)
A Touch of Myrrh (1974)