Ralph D Dunkelberger ( 1894 - 1965 ) was an American painter. Ralph D Dunkelberger s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 2300 USD for ALONG THE CREEK in 2005 to 5148 USD for Landscape with two children riding bicycles across a covered bridge in 2009 , based on the size and medium of the artwork.