The original lithographs shared similar characteristics in inking and paper, and adhered to folio sizes. Sizes of the images were standard (trade cards, very small folios, small folios, medium folios, large folios), and their measurement did not include the title or borders. These sizes are one of the guides for collectors today in determining if the print is an original or not. "Currier used a cotton based, medium to heavy weight paper depending on the folio size for his prints until the late 1860s. From about 1870, Currier & Ives used paper mixed with a small amount of wood pulp." In addition, Currier's inking process resembled a mixture of elongated splotches and dashes of ink with a few spots, a characteristic that modern reproductions would not possess.