It certainly is, and the art is by John Rosenberger and Vince Colletta. We can only guess how much pencil was there before Colletta got out his eraser.
What I find interesting about Kanigher is for someone who did introduce a lot of social concerns into mainstream comics, he rarely seemed to know much about them. But he should at least be given props for trying--in those days anything controversial in comics could harm you, rather than help. At least till Stan Lee managed to get positive publicity out of the Spider-Man drugs story. (which isn't even about illegal drugs, but about the abuse of pills. Though Harry later has a bad acid trip) But Kanigher's brand of liberalism is one peculiar to modern eyes; his attitude about race or gender or the like isn't so much that it doesn't matter, but more along the lines of "it's not their fault they're women/black/etc." But that's probably mostly due to his generation.