scificovers:Ace #F-311: Swordsmen in the Sky, edited by Donald A. Wollheim, 1964. Cover by Frank Fra
scificovers:Ace #F-311: Swordsmen in the Sky, edited by Donald A. Wollheim, 1964. Cover by Frank Frazetta. -- source link
Tumblr Blog : scificovers.tumblr.com