What has the author Harry Leigh Derby written?

There is no record of an author named "Harry Leigh Derby." It's possible there's a typo in the name or the author may have used a different name.

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* Any other details about the author: such as their full name, nationality, genre of writing, or any specific books you know they have written.

* Any other information about the books you're looking for: such as the title, publication year, or any key themes or characters.

With more information, I can hopefully help you find the author you're looking for.