Winner of the Portuguese Academy of History Award / Gulbenkian Foundation Award in History 2019“With his assiduous tracking and identification of the humans trafficked across the Eastern hemisphere, the author has produced a new and slightly provocative standard that is unlikely to be easily duplicated, meanwhile also unwittingly calling attention to the need for even deeper research on some of the circuits of the uglier side of the slave trade, as seen with the Indian Ocean littoral. All in all, this is a commendable work and a great resource for students of medieval Japanese history and Portuguese “expansion.”” – Geoffrey C. Gunn, Nagasaki University, in: Monumenta Nipponica 74/2 (2019)"With no significant primary sources specifically on the Portuguese slave trade, the author has clearly made a prodigious effort to comb through documents at archives in Macau, India, Portugal, Italy, and Spain for references to Asian slaves and to compile an important account of a significant part of Portugal’s trade with Japan. The result is a comprehensive study in English on a topic that has received little attention but will be of interest to a wide range of scholars." – Jan Leuchtenberger, University of Puget Sound, in: The Journal of Japanese Studies 47/1 (2021)