“The Secret Commonwealth of Elves, Fauns, and Fairies” is the famous and mysterious treatise on fairy folklore, witchcraft, second sight, and ghosts by Gaelic scholar and minister, Robert Kirk. Written before he died in 1692, the work was not published until 1815 after many legends had grown around Kirk’s death, which imagined that he was secreted away by the fairies themselves for revealing their secrets. Most famous during his own lifetime for publishing one of the first translations of the...