Which is the front and which is the back? Holstein and van der Hoof chose to display the Crazy patchwork side of this quilt in Abstract Design in American Quilts. But they also could have chosen to display this side, the "back," which could not be more different: appliquéd Butterfly blocks separated by yellow and white sashing.

Pattern: 
Crazy quilt, detail (back)
IQM, 2003.003.0053