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Pittsburgh PA:  Advertisement supporting the WW1 war effort.  Original poster design by Paul Stahr.  To give family and friends a better feel for the adventure, Brady Stewart hand-colored a black and white negative into a full-color 3x4 lantern slide.  The Process:  He contacted a negative with another negative to create a positive slide.  He then selected a fine brush and colors and meticulously created full-color slides.