Sydney Mortimer Laurence ( 1865 - 1940 ) was an American painter. Sydney Mortimer Laurence s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 41125 USD for Mt. McKinley from the Headwaters of the Tokachutna River, 19 in 2003 to 224000 USD for An August Afternoon, Mt. McKinley in 2005 , based on the size and medium of the artwork.