Karl Mattern ( 1892 - 1969 ) was an American painter. Karl Mattern s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 115 USD for still life with vegetable in 2004 to 1342 USD for Untitled (Wooded Landscape), 1951-54 in 2009 , based on the size and medium of the artwork.