This trailer has some nice shots of the creatures, and also some shots of my actual artwork itself (a mural and some period illustrations.) It should be coming out late August, and I'll post more details about it soon.
Radio as a whole is really before my time, but I kept coming across references to this specific horror radio play episode from 1948. The whole thing is a self contained short story and only about 22 minutes long (split in two parts below). I would really recommend listening to it alone in pitch dark.