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

OLD UGLY FACE

Appleton-Century New York 1940 544
Wells & Shakespeare

("Things seemed vague that evening ...")

Cover blue--gold letters

OM; THE SECRET OF AHBOR VALLEY

Bobbs-Merrill Indianapolis 1924 392