Bidding on Lot of (5)  FIVE 1904 WORLD'S FAIR STEREOSCOPE STEREOVIEW CARDS showing the INTERIORS of some of the EXHIBITS.   From the INGERSOLL SERIES #A8523.   They have extensive rub wear on fronts and soiling on backs.    Wish they were in better condition, but we don't often see items with the interior views of the Fair.  I've always thought these exhibits were incredible for the time.