From January and February of 1935.

The Mystic Mullah

It was an ageless thing that had existed since the beginning of time -- a monstrous green face that spoke sudden death. With its legions of ghostly, nebulous soul slaves, it had begun to terrorize the world. Even Doc Savage and his fantastic five were helpless against its awesome power, until....

The Red Snow

When the red snow descends, all in its path are destroyed, their bodies devoured by the scarlet rot. ARK, the monstrous-headed scholar of evil, sprays red death across a terrified nation and demands total surrender. Doc Savage is helpless as America reels under the crimson lash of deadly snow -- helpless because he stands accused of murder!