The pattern is in BH&G American Patchwork & Quiltinng Creative Collection book, 2006,
Quilt Lovers Favorites, Volume 7.
It is called
Limerick Log Cabin by Bettina Havig.
http://www.apqshop.com/limerick-log-cabin.aspx
I just made three blocks of a full size quilt. It works up really fast.
peace