Victorian crocheted bonnet / hood

I was antiquing a few weekends ago and came across this nifty Victorian bonnet. I didn't buy it, and I don't crochet, so no, I don't have a pattern, nor can I write one up. But it was still so neat I had to take pictures.

I'm sure some creative crocheter can come up with their own pattern for this, if there isn't already one floating around from Godey's or something.