What has the author Evelyn P Joslyn written?

It seems you are asking about Evelyn P. Joslyn. It's likely you're thinking of Evelyn P. Nies, a well-known writer, but there isn't much information readily available on someone named Evelyn P. Joslyn.

To help me clarify, could you please provide more details about Evelyn P. Joslyn? For example:

* What kind of books do you think she might have written? (e.g., fiction, non-fiction, children's books, etc.)

* Do you have any other information about her, like a specific book title or a time period she might have written in?

With more information, I can try to help you find the books she has written.