You know a great place to look would be Jinny Beyer's book, A Quilter's Album of Patchwork Patterns. I have it, if I have time later I'll dig it out and see if I can find your block. She has over 4,000 blocks in it and she tried to find their earliest origins. Many of them were patterns given away in ladies magazines from the 20's to 40's when quilting really gained in popularity. :)