Abstract
In 1894, the German scholar Edmund Parish published his classic work Über die Trugwahrnehmung, with an expanded English edition called Hallucinations and Illusions appearing in 1897. Both versions won critical acclaim from celebrities such as Joseph Jastrow and William James, although, curiously, few others seemed to have noticed the book. After two more publications, Parish inexplicably stopped publishing. During the century that followed, it seemed as if neither he nor his work had ever existed. Now that scholars have finally started to appreciate the book, the present paper seeks to answer the questions of how it came into being, why it disappeared for so long, and who its mysterious author was.