Books by David Hallquist
Planetary: Mars
Astounding Frontiers #3
Astounding Frontiers #3
Astounding Frontiers Issue #4
Astounding Frontiers Issue #4
Astounding Frontiers Issue #5: Give us 10 minutes and we will give you a world
Sci Phi Journal: Issue #2, November 2014: The Journal of Science Fiction and Philosophy (Volume 2)