I just did some more research--didn't find the pattern, but found the most inspiring and beautiful story about Donna Sue Groves, the woman behind the barn quilts. If you have a moment, read this and you'll love the barn quilts even more. Sounds like you'll have help drafting the block. Here's link for the story:
http://thehardestyear.com/2009/07/a-...e-of-her-life/