One Mission Society (formerly known as Oriental Missionary Society and OMS International) is an Evangelical Christian missionary society which was founded in 1901 by Charles, Lettie Cowman, Juji Nakada, and Ernest A. Kilbourne. It is currently operating in 78 countries and is based in Greenwood, Indiana. Founding OMS was founded in a storefront building in Tokyo, Japan. In 1901, American missionaries Charles and Lettie Cowman partnered with a Japanese pastor, Juji Nakada, holding Christian evangelistic meetings for 2,000 consecutive nights. Japanese churches were organized, and the new association, the Japan Holiness Church (JHC), grew rapidly. Not long after their arrival in 1902, their family was joined by that of Charles' former co-worker, first conversion, and best friend, Ernest Kilbourne. Founders Charles Cowman Born on March 13, 1868, Charles E. Cowman grew up in the church. At 15, he left home for a job in telegraphing. He met and married Lettie Cowman when she was 19 and he, 21. After living in Colorado for one year of marriage, they spent the next ten years in Chicago where Charles continued his work in telegraphy. In 1894 that Charles began his work as a missionary, preaching to coworkers. The Cowmans moved to Japan in 1901 to partner with Juji Nakada. Lettie Cowman Born on March 3, 1870, Lettie B. Cowman met her future husband for the first time when she was a baby, and met again as teenagers. In later life, Lettie wrote Streams in the Desert about the hardships she experienced, specifically when Charles' health was rapidly declining. She died in 1960 on April 17, at the age of 87. Juji Nakada Born on October 29, 1870, Juji Nakada was a rebellious youth. His decision to enter missionary work was influenced by a life-long mentor, Reverend Yoichi Honda. Nakada went to America, to attend the Moody Bible Institute in Chicago. He returned to Japan as an evangelist. Cowman, who had chosen to help financially support Nakada, received news of Nakada's participation in several mass conversions. Cowman and Nakada together established the Tokyo Bible Institute, with Nakada to serve as the first president. The institute was used for classes during the day and evangelism in the evenings. An OMS-published book No Guarantee but God states of Nakada, "It was not surprising that he was sometimes charged with being domineering, even dictatorial. But by the great majority of Christians, both laymen and clergy, he