Frederick John Mulhaupt ( 1871 - 1938 ) was an American painter. Frederick John Mulhaupt s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 33460 USD for At the Guinea Wharf, Gloucester, Massachusetts in 2004 to 168000 USD for The White Schooner in 2006 , based on the size and medium of the artwork.