OK. I have finished reading a superhero novel and am back to reading straight sf, to be followed by Poul Anderson's detective fiction. However, there is something that might be of interest to Poul Anderson Appreciation readers. Anderson wrote fantasy and sf. Superhero fiction combines these genres. Thus, in Elliot S. Maggin's Superman: Miracle Monday, Kristin Wells travels by technological means from the twenty ninth century, then, after arriving in the twentieth century, is possessed by a demon from Hell! Anderson, like most writers of imaginative fiction, keeps technological time travel in one genre and demons in another.
The outcome of the temptation of Superman has theological implications that prompted me to compare it with the New Testament and Paradise Regained. See here. Miracle Monday is a feel good book that everyone deserves to know about.