L.B. Cowman, also known as Lettie B. Cowman, was an American author and missionary born in 1901. She is best known for her devotional book, Streams in the Desert, which has inspired many readers with its daily meditations and spiritual insights. Cowman's writings often reflect her deep faith and experiences in missionary work. In addition to her literary contributions, Cowman was a co-founder of the Oriental Missionary Society, which focused on spreading Christianity in Asia. Her life and work have left a lasting impact on Christian literature and missionary efforts, encouraging countless individuals in their spiritual journeys.