William Delafield Cook ( 1861 - 1931 ) was an Australian painter. William Delafield Cook s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 713.55 USD for Bush Landscape in 2004 to 1180.81 USD for A South Gippsland Pasture in 2007 , based on the size and medium of the artwork.