[posted] Posted (#42547, Robinson) !

[Al Haines]

Art and Practice of Silver Printing, by H. P. Robinson and Capt. Abney   42547
  [Link: http://www.gutenberg.org/4/2/5/4/42547 ]
  [Files: 42547.txt; 42547-8.txt; 42547-h.htm]

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Regards,
Al