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

Published in 1867 in Shanghai, the A Japanese and English Dictionary was the culmination of years of dedicated work by American medical missionary and linguist James Curtis Hepburn. Arriving in Japan shortly after the country reopened its borders, Hepburn recognized the urgent need for a bridge between the two languages to facilitate communication during a period of rapid modernization and international engagement. His dictionary was a landmark achievement, providing Westerners with their first comprehensive, structured tool for understanding the Japanese language and offering Japanese speakers a systematic guide to English.

The dictionary is particularly celebrated for its introduction of the Hepburn romanization system, a method of transcribing Japanese sounds using the Latin alphabet that remains the standard for international learners today. Hepburn relied on the help of Japanese scholars and assistants to refine the entries and ensure accuracy. While the initial edition was a massive undertaking that sought to balance classical and contemporary usage, its success solidified its reputation as the essential reference work for diplomats, scholars, and traders for decades to come.