Tumblr favorite #2755: Beware the distaff army!

Tumblr favorite #2754: Dueling with gill-men
Tumblr favorite #2756: The Bounty Huntress

My original tumblr post was here. This image is the Spring 1957 issue of Space Science Fiction Magazine (one of only two issues). The ISFDB entry for the issue is here. The artist who created the cover is listed as Tom Ryan. The image was first posted on Tumblr by Vintage Geek Culture and comes to us via Not Pulp Co vers.