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Keywords: Comparative Lettering Hauy-Barbier-Braille.tif en A comparison of three methods of printing for the blind in the nineteenth century A and Z are printed in the embossed lettering favored by Valentin Haüy; in the night writing military code of Charles Barbier; and the modern English version of braille code by Louis Braille own SteveStrummer 2014-02-21 Cc-zero Braille letters |