What has the author W H Mercer written?

It appears there is no widely known author named "W.H. Mercer." It's possible that you've misremembered or misspelled the author's name.

To help me find the right author, could you provide any additional information:

* Full Name: Do you know the author's full name?

* Genre: What type of books did they write? (Fiction, non-fiction, etc.)

* Titles: Do you remember any titles of their books?

* Era: When were they writing? (Roughly, e.g., 19th century, 20th century, etc.)

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