Ivan Bulloch

Ivan Bulloch appears to be a mistaken reference to Iwan Bloch, a German dermatologist, psychiatrist, and psychoanalyst often called the first sexologist. He helped develop the concept of sexology and wrote influential works on sexuality and modern culture, including *Das Sexualleben unserer Zeit in seinen Beziehungen zur modernen Kultur*.

Delmenhorst, Germany Apr 8, 1872 Wikipedia
non-fiction sexology medical writing