L. Detton were the first Mormon missionaries in Korea; they arrived on April 20, 1956. Six more missionaries were sent to Korea the following summer; four of them went to Pusan. Due to postwar conditions in Korea, in summer 1958, half of the missionaries became sick with hepatitis. Missionaries had difficulties learning Korean. Church materials such as the Book of Mormon and hymnbooks were not translated into Korean until over a year after full-time missionary work began. Kim translated the Articles of Faith and the sacrament prayers, but missionaries still had difficulties communicating in Korean. Missionaries were sent translated tracts and pamphlets in September 1957, replacing ones in the Japanese language they had been previously using. For the next few years, missionaries were getting about eighteen baptisms a year, which was the highest of any mission at the time. This high rate of baptisms plateaued in 1964. Eighty percent of original converts were male, and this trend continued into the 1970s with over half of converts being male. At first, this was likely due to more contact between servicemen and Korean men. However, after the Korean War, the trend likely continued due to Korea's male-oriented society. Missionary work targeted men rather than women, by policy. After the economic effects of the Korean War began to diminish, Korean's interest in religion diminished as well and baptisms declined beginning in 1965. Translation of the Book of Mormon The first attempted translations of the Book of Mormon were done with the Japanese language and recently completed Japanese translation in mind. This caused problems, because Korean people held animosity for the Japanese people due to Japan's recent occupation of Korea due to World War II. Previously, the first copies of the Book of Mormon used in Korea were in English and Japanese. Students learning English were given the English version whereas older individuals were given the Japanese version because Korean people were forced to learn Japanese when they were occupied by Japan. Kim Ho Jik was one of the first involved in the translation process, having already translated the sacramental prayers and Article of Faith. Kim supervised the translation process, working with Chang Se Cheon and Cheong Dae Pan. Kim translated the English into Korean verbally, and Chang wrote down the translation. Due to Kim's other obligations, this was a slow process, so Chang eventually took over the daily translation. Only one half of