"The Japanese Tea Garden in Golden Gate Park - 1893-1941"
In this book given to me by Tanako Hagiwara, the great granddaughter of Makoto Hagiwara, it basically states that, "It was the San Francisco Japanese Tea Garden founder, Makoto Hagiwara who introduced the Japanese Tsujiura Sembei to customers in his Tea Garden, in 1914, a year before the Panama-Pacific Exposition. Hagiwara served them with the newly introduced Green Tea in the picturesque house of the Japanese Tea Garden in San Francisco's Golden Gate Park."