E.A. Sargent was a partner with Adolfo Farsari in the Yokohama-based firm of "Sargent, Farsari & Co.", which dealt in smokers' supplies, stationery, visiting cards, newspapers, magazines and novels, Japanese and English conversation books, dictionaries, guidebooks, maps, and photographic views of Japan. "Sargent, Farsari & Co." operated in the 1870s. Wikipedia
The definitive Wikipedia entry for E.A. Sargent. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/E%2eA%2e_Sargent