| Charles Gentile Backmark "From Gentile's Photographic Studios, S.E. Cor. State & Washington Sts. Chicago." 1875 (ca) Stereoview, back Library of Congress, Prints and Photographs Division Reproduction Number: LC-DIG-ds-03656 (digital file from original item) LL/108826 Note reference to "Access by the Finest Elevator in the World."
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