vintage hand stitched cotton quilt blocks, patchwork solid colors lilac lavender & yellow

Lot of fifteen hand stitched quilt blocks approximately 10" x 10", very nicely made. These are 1930s or 40s vintage, all cotton fabric. Such pretty colors, butter yellow with lilac and unbleached white.

These are nice and crisp, but they do have some yellowing and spotting / foxing. I haven't washed them, but would expect them to clean up with a soak or a pre-treat and washing.