Crystal Crypt, the & Beyond the Door by DICK, Philip K.
LibriVox
Two early science fiction stories by the wonderful craftsman, Philip K. Dick. In the Crystal Crypt, taken from the 1954 Planet Stories, the war between Mars and Terra is about to erupt and earth has only merchants and salesmen to fight; can they carry out their mission? Beyond the Door is a story that asks and answers the question: what lives beyond the door? And is it dangerous? (Summary by Phil Chenevert)