Physical description: sensitised to within about 5mm of paper edges
Inscription: looped Xs in three corners; pencil X in fourth corner; pencil X in middle of one edge; in pencil, recto: I29 [capital i29]; in pencil, recto: 1+2 Water much iod. [much iodine]; in pencil, verso: 10' [10 minute exposure]
Owner:Smithsonian Institution's National Museum of American History