What has the author John McGill written?

There doesn't seem to be a widely known author named John McGill.

It's possible:

* The name is misspelled: Perhaps you're thinking of a different name, like "John MacGill" or "John Mcgill".

* The author is not well-known: It's possible the author has written works in a niche genre or hasn't had widespread success yet.

* You've encountered a pseudonym: John McGill could be a pen name used by another author.

To help me find the author you're looking for, could you please provide:

* More information about the author: Do you know anything about their nationality, genre, or time period?

* Any titles of their works: Do you remember any specific books or articles by this author?

With more information, I can help you find the correct John McGill or uncover the author you're looking for.