With halftone printing yet to be invented, the pictures in these souvenir albums were redrawn from photographs so that they could be mass-produced on lithographic presses. Printers used a multi-pass process to achieve a range of tones so that, when varnished, the pictures looked like photographs. The introduction of the Kodak Box Brownie in 1900, as well as new printing technology, led to their demise. A miniature album on the Statue of Liberty is stitched into the center of the Paper.