Thomas Sidney Moran ( 1837 - 1926 ) was an American painter and printmaker of the Hudson River School in New York, known for landscape, seascape and portrait painting. Thomas Sidney Moran s works have been put up for auction numerous times, with realized prices greatly surpassing estimated prices, varying from 999500 USD for Badlands of the Dakota, 1901 in 2002 to a remarkable record 12485000 US