What has the author David Napier Matthews written?

There is no author with the name "David Napier Matthews" readily found in any major literary databases or online search results. It's possible that:

* The name is misspelled: Check for any variations or alternate spellings of the name.

* The author is not well-known: They might have published independently, in a niche genre, or under a different name.

* The name is fictional: You might be thinking of a character from a book or film.

Could you provide more context? Maybe you remember the title of a book, the genre, or any other details about the author?