What has the author R F Ewer written?

There doesn't seem to be a widely recognized author named "R F Ewer." It's possible that:

* The name is misspelled. Could you double-check the spelling?

* The author is less known. Maybe they have a different name or only wrote under a pseudonym. If you have any more information about the author or their work, it would help to find them.

* The author is not yet established. Perhaps they are a newer author who hasn't gained much recognition yet.

Could you provide any additional context or details about the author or their work?