A Japanese-English and English-Japanese Dictionary by J.C. Hepburn

First published in 1867, this landmark dictionary was the product of American missionary and physician James Curtis Hepburn. During his residency in Yokohama, Hepburn recognized the urgent need for a systematic bridge between Japanese and Western languages to facilitate communication, diplomacy, and the translation of religious texts. The work was an monumental scholarly achievement, as it established the Hepburn romanization system, a method of transliterating Japanese characters into the Latin alphabet that remains the international standard for the language today.

The dictionary's design reflects the practical, scholarly intent of the Meiji-era mission, focusing on precision and accessibility for foreign students and Japanese scholars alike. It was received as an essential reference tool, effectively modernizing the linguistic landscape of late nineteenth-century Japan. By codifying pronunciation and vocabulary, Hepburn's work provided the infrastructure necessary for the burgeoning cross-cultural exchange of the era, cementing its place as a cornerstone of Japanese studies.