Hallett, Joan

Joan Hallett is, as far as I know, a single book author. Other than the fact this book is about Patsy and her pony, I can tell you little! The book does get a mention in Frank Palmer’s Literature and Moral Understanding, a discussion of the difference between fiction and fantasy, in which he quotes an extract from the book.
Finding the book
A very hard book to find indeed, and consequently often extremely expensive.