Hard Crochet - Stetson-style Hat finished

I recently purchased the book "Hard Crochet" by Mark Dittrick. The book was published in 1978, and documents a crochet technique using extremely tight tension and a small hook to create a very firm fabric. One of the projects in Mr. Dittrick's book is a Stetson-Styled hat. You can see the results here on my granddaughter. I'm keeping this hat for myself.