In the mid 80's I lived in a small town in FLA. They had an incredible antiques market that I would visit often called Rennigers. There I was introduced to what I call "cool quilts". These quits from the 20s, 30s & 40s were mostly scrap quilts with muslin backs and backgrounds. Because of the generation of the quilts, my guess is that they had manufactured cotton batts. Not sure if it was the fabrics, the backings, battings or a combination of all 3 but these quilts were cool to the touch, even in the hottest of summers. I was able to rescue several of these quilts from the "quilt farmers" (contemptable people who would cut up perfectly good works of art in favor of creating pigs and chickens out of the material. I hope when I get old and worn, no one cuts me up for parts). I also inherited a small collection from my husbands grandmothers, both quilters.
I have begun making my own "cool quilts". With the inspiration of wonderful blog A Quilt Is Nice here.