I have that on bucket list. The pattern I have is from Great American Quilts 1994, but I know it is in another one of my "Best of, some kind of collection of" books too. At quick glance, you make the 9 patch squares. Add strips on the 4 sides of some of them, and sew seams (with on-points together sewn to make seam) to make a vertical row(length of quilt). Sew 9 patch squares between rows. Kind of hard to describe in words, but if you look at picture, you put a 9 patch between vertical rows of 9 patch and sashing blocks. Lots of y seams, but you get the hang of them after you do so many. Lots of instructions on youtube.