Here's a great new book on making breads w/o machinery. And of course includes croissants:
Baking by Hand; Make the Best Artisanal Breads and Pastries Better without a Mixer. Andy & Jackie King. Page Street Publishing Co. 2013.
The dedication is to: Moon Face and Pea Brain, and for Banana Dog--the Most Patient One of All
so you know it must be good. The young couple (still optimistic) are in Salem, Mass. Watch out of the WH's by far worse than the tea gang.
From the land of PIMCO