This is Amazing Stories for April 1957, cover by Edward Valigursky. There is an ISFDB entry for this issue here. I found this copy of the cover in this bondage index.
Pulp Parade #242: I wouldn’t exactly call if a shocking hobby…
Tag Archives: tentacles
Tumblr favorite #2736: Watch out for that octopus!
My original tumblr post was here. This image was originally posted on Tumblr by SteamPunk Divas.
Tumblr favorite #2733: Engulfing green tentacles
My original tumblr post was here. I reblogged this image from this tweet with the explanatory text “Tweeted by Frank Enstein 
@frank_enstein__ .” This is a painting by the Japanese illustrator Noriyoshi Ohrai (1935-2015). You can find more of his work in this blog post and an exhibition page here.
Tumblr favorite #2728: Chaos in Arcturus
My original tumblr post was here. This image of a cover of Chaos in Arcturus was first posted on Tumblr by Not Pulp Covers and comes to us via Little Bunny Sunshine.
Tumblr favorite #2700: Beware the fishman
My original tumblr post was here. This image is the cover of the Winter 1945 edition of Planet Stories. The ISFDB entry for the issue is here and provides the same cover in slightly less washed-out color.
The cover painting was by an artist named Harry Lemon Parkhusrt.
Tumblr favorite #2551: Space woman v. space squid
My original tumblr post was here. This image was first posted on Tumblr by pinupgirlsart with the identifying information Space Woman versus Space Squid, by F. Newton Burcham. There’s a small gallery of Burcham’s work .
Tumblr favorite #2525: Another tentacle eruption
My original tumblr post was here. This illustration is by comics artist Ray Lago, who has a professional site here. It was originally posted on tumblr by Wemblin’ Fool and comes to us via notpulpcovers.
Tumblr favorite #2432: Firing back
My original tumblr post was here. This painting Cosmic Ranger V.2 by Carlos Valenzuela was originally posted on tumblr by c0ry-c0nvoluted and comes to us via Reginald Juice.
Tumblr favorite #2428: Careful, Anne!
My original tumblr post was here. This image is Anne Tenna by penerotic. Penerotic’s Patreon is listed on the image, but for the convenience of those of you who want to do the right thing and spread the love, I’m linking to it here. The image was first posted on tumblr by phrrmp and comes to us via coryscrappycinema.
Tumblr favorite #2311: Golden-age heroes knew how to deal with tentacle beasts
My original tumblr post was here and included the comment “Use our new Titan-atomic guns!” This comics panel was first posted on tumblr by furious ape!