Thomas Sidney Cooper (attributed To) ( 1803 - 1902 ) was a British painter. Thomas Sidney Cooper (attributed To) s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 202 USD for a bull and two cows in 2004 to 5000 USD for Cows Resting by a River in 2018 , based on the size and medium of the artwork.