It is possible that:
* The name is misspelled. It might be worth checking if there are any similar names with known authors.
* The author published under a pseudonym. It is possible that Perley Orman Ray used a different name for their publications.
* The author is relatively unknown. There are many writers who publish works that don't achieve widespread fame.
To find more information, you could try:
* Searching online databases: Look for books or articles by that name on websites like WorldCat, Project Gutenberg, or Google Scholar.
* Checking local libraries: Your local library might have resources that can help you find information about authors.
* Consulting with a librarian or bookseller: They might have access to more specialized resources or be able to point you in the right direction.