My original tumblr post was here. The image illustrates a story “Total Recall” by Larry Sternig with the “Buried under layers of horror in the old scientist’s brain was the only thing that could save the System — and Roger Kay had exactly half an hour to dig it out.” The image was first posted on tumblr by Not Pulp Covers with the additional text:

Shh,” said Roger gently. “Watch.” He drew her to the screen.

Planet Stories, Fall 1946

The image comes to us via doppelgaenger18.