Dr. Yen Sin
Book Series
by Donald E. Keyhoe
Latest:
2017
Book 1
Dr. Yen Sin #1: The Mystery of the Dragon's Shadow
by Donald E. Keyhoe
Dr. Yen Sin #1: The Mystery of the Dragon's Shadow, May-June 1936
by Donald E. Keyhoe
Book 2
Dr. Yen Sin (No. 2): The Mystery of the Golden Skull
by Donald E. Keyhoe
Book 3
Dr. Yen Sin #3: The Mystery of the Singing Mummies
by Donald E. Keyhoe
Dr. Yen Sin #3 September-October 1936
by Donald E. Keyhoe