Margaret. Elizabeth Poston, composer: her life at Rooks Nest (2005) Bartlett, James C: Beyond the Apple Tree: The Published Choral Music of Elizabeth Poston. University of Wisconsin-Madison (1996) English classical composers Women classical composers 20th-century classical composers 1905 births 1987 deaths Alumni of the Royal Academy of Music People educated at Queen Margaret's School, York 20th-century English composers People from Stevenage 20th-century English women musicians 20th-century women composers BBC Radio 3