I do not want this to be a case of one-upmanship but I cannot resist pointing out that the authors' descriptions of Toru Matsumoto on pages 12, 43, and 97 are factually incorrect.
The authors say on page 12 that Toru Matsumoto emigrated to the U.S. in the 1920s. However, it was in 1935 that Toru Matsumoto first visited the United States. Moreover, he did not emigrate to the U.S. then but just visited the country to attend the 2nd U.S.- Japaese Students Conference.
On page 43, the authors state that Toru landed in San Francisco. It is incorrect; he landed in Seattle. And it was his brother Tsuyoshi, not a friend, that arranged for him to meet Jay and Mary.
On page 97, the authors write that Toru Matsumoto was living in New York city with his American wife Emma. Emma was not an American but a Japanese citizen then.
Lastly, Toru Matsumoto was never an American citizen throughout his life. He came back to Japan in the wake of WWII and remained in Japan until his untimely death in 1979.
For further details, please consult my Between Two Worlds: Matsumoto Toru and His Age (M.A. Thesis: Zimmerman Library, University of New Mexico, Albuquerque, NM).
Otherwise, the book is a good introduction to the subject.