In my eagerness I ordered 3 CQ books, and they have arrived now. This is a real hit, at least to me:
The Magic of Crazy Quilting, 2nd edition by Marsha Michler. I love the photos of the antique quilts!
Also this is good:
An Encyclopedia of Crazy Quilt Stitches and Motifs by Linda Causee
Very clear pictures on how the stitches are done and a good choice of stitch combinations.
I could have done without the 3rd book, but maybe I can get later some ideas out of it. It seems that SRE skills are a must to give blocks a more fancy look. But later, later!