Ralph M Rosenborg ( 1913 - 1992 ) was an American painter. Ralph M Rosenborg s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 200 USD for LANDSCAPE OF THE NIGHT, VARIATION. in 2004 to 4000 USD for American Landscape: Houses, Gardens and Trees in 2007 , based on the size and medium of the artwork.