What has the author Howard Mackey written?

It seems you're asking about an author named "Howard Mackey". However, there's no widely known author with that exact name. It's possible:

* The name is misspelled: Perhaps you're thinking of a different name, like "Howard Mackey" or "Howard Mackay"?

* The author is relatively unknown: It's possible the author is less known or publishes in a specific niche.

* The author is a pseudonym: Some authors use pen names.

To help you find the right author, could you please provide more details?

For example:

* Do you remember any of the books they wrote?

* What genre are they known for?

* Where did you encounter their name?

The more information you give, the better I can help you identify the correct author.