vintage handmade quilt blocks, unbleached cotton fabric cathedral window squares lot 1000+

HUGE lot of over 1000 (over one thousand, that's right) cathedral window quilt blocks, plain unbleached cotton fabric. I can't imagine how many hours of cutting, folding and stitching must have gone into the making of these.

Each block is approximately 3 1/4" square, very neatly done and sized - these should go together easily. Some have a little spotting or foxing, I haven't washed or soaked them. Overall very good, these are probably 1940s or early 50s I think. Around 70 years old.