What has the author Henry J Swallow written?

There is no known author named "Henry J Swallow." It's possible there's a misspelling or that the author uses a different name. To help me find the correct author, could you please provide any additional information such as:

* Genre: What kind of books does the author write? (e.g., fantasy, mystery, romance, historical fiction)

* Specific titles: Do you know the title of any books they've written?

* Approximate publication dates: When did they publish their books?

With more information, I can help you find the author and their works.