Sidney Mortimer Laurence (the Manner Of) ( 1865 - 1940 ) was an American painter. Sidney Mortimer Laurence (the Manner Of) s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 60 USD for Road Through Larkspur in 2010 to 1673.24 USD for EXTENSIVE MOUNTAIN LANDSCAPE AT DUSK in 2010 , based on the size and medium of the artwork.