Glen C Sheffer ( 1881 - 1948 ) was an American painter. Glen C Sheffer s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 2400 USD for Pair of Female Nudes in 2006 to 4000 USD for Chicago World's Fair, Century of Progress 1833-1933 in 2009 , based on the size and medium of the artwork.