Karl Yens ( 1868 - 1945 ) was an American painter. Karl Yens s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 75 USD for Bohemian Grove in 2011 to 6600 USD for Wedding ceremony of Juan Jose Chapman and Maria Guadalupe Ortega at Santa Ynez in 2013 , based on the size and medium of the artwork.