Oscar F Adler ( 1868 - 1932 ) was an American painter. Oscar F Adler s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 587 USD for A Portrait of Edith Rivers Hopkins and Son Lance in 2004 to 4370 USD for farm scene with men plowing a field in 2005 , based on the size and medium of the artwork.