Cover blue
THE MYSTERY OF KHUFU'S TOMB
Appleton-Century New York 1935 279 Ill.
("We Americans are ostriches …")
(Khufu's Real Tomb—MAGAZINE—Adventure 10/10/22)
Cover purple—gold letters
THE NINE UNKNOWN
Bobbs-Merrill Indianapolis 1923 353
McKinley, Stone & McKenzie (Masterpieces of Oriental Mystery)
("I had this story from a dozen people …")
(The Nine Unknown—MAGAZINE—Adventure 3/20/23 to 4/30/23)
Cover blue—yellow letters