| Gurney & Son Untitled image n.d. Stereocard, detail Jefferson Stereoptics Courtesy of John Saddy (Auction, Tue, Dec 12, 2006 & Thu, Dec 14, 2006, # 06-4, Lot 285) LL/15813 Identified on the back twice by modern hand, once in pen, once in pencil, "Teresa Carzena."
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