国際通運(株)『国際通運株式会社史』(1938.12)

The Edo Jobikyaku don’ya (wholesale express messengers) began in 1639 and were reorganized in the Meiji period to form Riku-un Moto Kaisha (Land Transport Company), which handled nationwide freight transport under the protection of the government. The company was renamed Naikoku Tsu-un Kaisha (Domestic Express Company) in 1875 and reorganized into a joint-stock company in 1896. The spread of railroads caused a flood of short distance carriers, but the government enforced large-scale amalgamations. Naikoku Tsu-un merged with a large number of short distance carriers in 1928 and renamed itself Kokusai Tsu-un Kabushiki Kaisha (International Express Co., Ltd). Covering the whole country, Kokusai Tsu-un strove for the development and improvement of land and maritime transportation. Dissolved due to national regulations in 1937, the company was taken over by the government-funded Nippon Express Company, Ltd. This shashi covers 300 years of history divided into the Edo period Jobikyaku don’ya era, the Riku-un Moto Kaisha era, the Naikoku Tsu-un era, the Naikoku Tsu-un Kabushiki Kaisha era, and the Kokusai Tsu-un Kabushiki Kaisha era. The shashi devotes many pages to the history of the establishment of Kokusai Tsu-un and the establishment of Nippon Express.