The birds of Cumberland : critically studied, including some notes on the birds of Westmorland / by H.A. Macpherson and William Duckworth. (1886)
William Duckworth (January 13, 1943 – September 13, 2012) was an American composer who also was an author, educator and Internet pioneer. He wrote more than 200 pieces of music and is credited with the composition of the first postminimal piece of music, The Time Curve Preludes (1977-1978), for piano. Duckworth was a Professor of Music at Bucknell University. Nora Farrell, his wife, runs Monroe Street Music, which publishes many of his pieces.