Missionary pioneer. Together with ministry partner Elizabeth Cridland (1931), Mary pioneered Gospel witness among the Uduk people of the Sudan and planted an enduring church there. With intrepid grit and excellence, they learned the language, translated scripture, taught the people to read, established an orphanage, midwifed, nurtured the church, and modeled the life of faith before the people.  Upon retiring from additional teaching and church planting in Kenya, Beam and Cridland founded Bible Alliance, which provides audio cassette tapes of the scripture in many of the world's yet unwritten languages.  Mary passed away in 2002.