* The name is slightly incorrect: Perhaps there's a typo, or the name is slightly different (e.g., Percy Alfred Harrison).
* The author is obscure: They might have written a small number of works, or they might be a local or niche writer.
* The author is pseudonymous: Percy Alfred Harris could be a pen name.
To find out more, you could try:
* Checking online databases: Use databases like WorldCat, LibraryThing, or Google Books.
* Searching in academic libraries: These libraries often have extensive catalogues and databases.
* Checking with literary organizations or societies: They may have records of authors, even obscure ones.
* Looking for mentions of the author in other works: If the author is mentioned in a bibliography or footnotes, it could lead you to their works.
Please provide more information, such as a book title or a time period, so I can help you narrow down your search.