Title: Doc Savage.  # 3
Subtitle: Meteor Menace.
Description: From the back cover:

Doc Savage and his fabulous crew journey to Tibet in pursuit of their most dangerous adversary, the evil genius Mo-Gwei.  Battling against overwhelming odds, they try to stop him from conquering the world with a diabolical machine known as the Blue Meteor, a screaming blue visitor from space that turns men into raving animals!