Helen Fouché Gaines was a member of the American Cryptogram Association and editor of the book "Cryptanalysis" (originally "Elementary Cryptanalysis"). Her nom was PICCOLA. Shortly after the publication of the book, she died. Wikipedia
The definitive Wikipedia entry for Helen Fouché Gaines. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Helen_Fouch%c3%a9_Gaines
In 1933, "The Master Puzzler" was published, and contained the name of Helen Fouche Gaines under the nom of PICCOLA. www.und.nodak.edu/org/crypto/crypto/.chap01.html