Perhaps you have never heard of Lettie Cowman, but hopefully you have been introduced to her mloved devotional books, Streams in the Desert and Springs in the Valley. These two books, published in 1925 and 1939 respectively, have been perennial best sellers, gracing the nightstands and desks of men and women for generations. What made them so timeless and who was the woman behind them? Lettie and Charles Cowman served faithfully as missionaries in Japan from 1901-1918. Their efforts were successful, but eventually Charles developed serious health problems and they had to return home. This was not the future they expected. Lettie began to journal various quotes and scripture verses…