Horace A. Laffaye. The Evolution of Polo. McFarland & Company, 2009. ISBN 0786438142. «It is very true that the First World War robbed the British of some of their top and most promising players: Geoffrey Bowlby, Harold Brassey, Leslie Cheape, Noel Edwards, Francis Grenfell i Rivy Grenfell, Lord Hugh Grosvenor, Brian Osborne, Bertie Wilson...»
