found: Ryoma, 1999:t.p. (Romulus Hillsborough)
found: Hillsborough, Romulus. Samurai revolution : the dawn of modern Japan seen through the eyes of the shogun's last samurai, 2014:title page (Romulus Hillsborough) verso of title page (copyright, Jeff Cohen)
found: Contemporary Authors Online, viewed May 8, 2018:Romulus Hillsborough (Romulus Hillsborough; born January 23, 1953, Boston, Mass.; writer; grew up in Los Angeles, Calif.; after receiving a B.A. in English from California State University, Northridge, went to Tokyo, Japan, where he spent sixteen years immersing himself in the study of Japanese language, culture, and history; primarily writes historical fiction; lives in San Francisco, Calif.)
found: H-Net : Humanities and Social Sciences Online web site, viewed May 8, 2018:book review: John E. Van Sant. Review of Hillsborough, Romulus, Samurai Assassins: "Dark Murder" and the Meiji Restoration, 1853-1868. H-Japan, H-Net Reviews. December, 2017 (Romulus Hillsborough, pen name of Jeff Cohen)