These blocks were printed as a set by William Pinch of the Rainbow Quilt Block Company in Cleveland, Ohio. He first produced these pre-stamped embroidery blocks in the 1930s, but they became very popular during and after WWII. I have researched the Rainbows for the American Quilt Study Group and you can find my paper in the 2009 Uncoverings journal. Pinch was a very prolific designer with over 1000 designs to his name, but he did not often label his work so identification becomes an issue. He did, however, produce over a million 9", 12" and 18" preprinted embroidery and applique blocks in a long career from 1925-1972. You have a wonderful quilt! If you ever decide to sell it, please contact me at
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