This pattern is featured in a beautiful hard cover book.
It is an illustrated story of a girl that finds a tiny Mermaid inside a shell. There are included knitting and sewing patterns to make the Mermaid Doll.
The doll can be made with worsted for the 18” doll or sport for the 15” version. Knit in the round with minimal sewing.

The book is available in my Etsy shop here. The book includes both the knitted and sewn patterns - plus the wonderful story and illustrations!