PHILIP W. ERRINGTON is an antiquarian book expert within the Department of Printed Books and Manuscripts at Sotheby's in London. A graduate of the University of London, he read for his BA, MA and PhD at University College. In 2000 he was appointed a visiting research fellow of the University of London, Institute of English Studies. He was appointed editor of The Journal of the John Masefield Society in 1997. He was responsible for, and introduced, facsimile centenary editions of Masefield's Salt-Water Ballads in 2002 and Ballads in 2003. His bibliography, John Masefield, The 'Great Auk' of English Literature, is published by the British Library.