The three stories with The Shadow that were in this issue of the original comic book, which was published by Street and Smith, who also published the pulp magazine. "Maxwell Grant" is a house name. Walter Gibson was one of the most prolific writers of stories with The Shadow, he may have written these stories, too.
These comics are similar to the radio show in some respects, such as having The Shadow turn invisible. Margo Lane is also important here, and they didn't always have her in the pulp stories.
"Monstradamus" is like a different version of "Nostradamus".