Just thought some of you may be interested in my latest blog post https://davidgrahammitchell.substack.com/p/one-hat-to-fit-them-all
I had a great deal of help with this from Matthew Demarkos, who is an expert in all things connected to Lewis Carroll. He has posted a video on the on the You Tube site of the Lewis Carroll Society of North America about the same design, but largely giving different information, which is well worth a watch. See https://www.youtube.com/watch?v=tO3rj67Esco Dave
