The cover and nine interior illustrations were created by "Blotch".

He did his first interior illustration for the science-fiction magazine Amazing in 1930.

He recognized every one instinctively, even those who looked nothing like the cover and interior illustrations that various artists had supplied for his works.

In 1925, he began drawing interior illustrations for Adventure magazine.

Sometimes the interior illustrations in children's books become so cluttered that they upstage a story.

Later pulps began to feature interior illustrations, depicting elements of the stories.

Daniel Horne has produced interior and cover illustrations for role-playing game books since 1986.

The interior illustrations appear to be by a different artist.

Sardinha has produced interior illustrations for role-playing game books since 2000.

Paul created hundreds of interior illustrations from no later than 1920.