What has the author Harry Parker written?

There doesn't seem to be a well-known author named "Harry Parker." It's possible:

* The name is misspelled. Is there a different spelling you're thinking of?

* The author is less famous. There could be a lesser-known author by that name. Do you have any more information about their work (genre, time period, etc.)?

* It's a pseudonym. Perhaps they write under a different name.

Please provide more information so I can help you find the author you're looking for.