What has the author Oswald H Robertson written?

There does not seem to be a widely known author named Oswald H Robertson. It's possible that the name is misspelled or that the author publishes under a different name.

Could you please provide more information, such as:

* The genre of the author's work: What kind of books did they write? (e.g., fiction, non-fiction, science fiction, etc.)

* The approximate time period they were active: When were their books published?

* Any specific book titles or series: Do you remember any of the books they wrote?

* Any other details you remember about them: Did you see their name on a website, in a library catalog, or in a book?

With more information, it might be easier to find out more about the author you are looking for.