I have been very interested in some of the old designers like Ruby Short Mckim. Her grandaughter is starting to offer her patterns for sale. Possibly you could contact them to see if this was one of Ruby's designs. She is featured every now and then in American Patchwork and Quilting, one of the mags that BEtter Homes and Gardens has. BB&H did back in the 30's and 40's publish some of her patterns as well as several newspapers in the midwest. She was a very prolific designer so perhaps this is one of hers. Can't hurt to try! Good luck. The search has been fascinating so keep us posted.