The Dell mapbacks were not confined to mysteries. Here, for example, is the map intended to guide the reader through P. G. Wodehouse’s Leave It to Psmith. Perhaps the presence of jewel thieves made the book enough of a mystery to warrant it.

More surprisingly, Edgar Rice Burrough’s Cave Girl, in which a modern collegiate must become a savage fighter to win the love of the eponymous cave girl, also required a map. The plot, essentially a series of fights, isn’t hard to follow, but the map is attractive anyway.

(Posted by Doug Skinner)