I drafted the pattern for this block/mini quilt from a picture in the Nancy Cabot Block Index. The index is basically a collection of hand-drawn images of blocks from Nancy Cabot's circa 1933-1948 column in the Chicago Tribune.
According to the index, Barn Bats was published in Nancy Cabot's column on October 19, 1935. It's not a block that I had seen before and I haven't been able to find any examples of it elsewhere. It's a great design though, and I hope you enjoy it!
I used embroidery to make a little vampire bat face in the middle of my mini quilt.
You can find the Barn Bats tutorial here.