* The name is spelled incorrectly: Perhaps the author's name has a slight variation in spelling.
* The author is relatively unknown: They might be a newer author or have a niche audience.
* The author is using a pseudonym: They might have a different name for their public works.
To help find more information, please provide:
* Any additional details you know about the author: Do you know their genre, the approximate time period they wrote, or any specific book titles?
* The context where you encountered the name: Was it a book, article, website, or other source?
With more information, I can try to locate any publications by William A Rossi.