Omer Thomas Lassonde ( 1903 - 1980 ) was an American painter. Omer Thomas Lassonde s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 3055 USD for Tuusivi Mountain Ridge, Samoa in 2005 to 4000 USD for Seated Woman with a Parasol in 2017 , based on the size and medium of the artwork.