Charles Gifford Dyer ( 1836 - 1912 ) was an American painter. Charles Gifford Dyer s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 1816.38 USD for Die Seufzerbrücke in Venedig in 2004 to 22500 USD for Cairo - The Return of the Mahmal from Mecca in 2007 , based on the size and medium of the artwork.