* Online booksellers: Search for "Percy A. Hillhouse" on websites like Amazon, Goodreads, or Barnes & Noble. They often list books by the author, along with reviews and summaries.
* Library catalogs: If you know your local library's website, you can search their catalog for "Percy A. Hillhouse."
* Academic databases: If you're looking for scholarly works, databases like JSTOR or Google Scholar might have information about Percy A. Hillhouse's publications.
* Wikipedia: Check if there's a Wikipedia page for Percy A. Hillhouse. It might list some of their works.
* The Internet Archive: This website has a vast collection of digitized books. You can search for "Percy A. Hillhouse" and see if any of their works are available.
Let me know if you have any other questions.