From original art to exposing and processing the plate and finally pulling a proof at the Chicago Tribune in 1937. We also see the use of "Dragon's Blood" in the platemaking process. Interestingly, 76 cases of Dragon's Blood consigned to Brown Brothers & Company to be used in photoengraving went down with the RMS Titanic 15 April 1912. Dragon's Blood is acid resistant, and is used to reinforce the coating that the engraving plates have on them. After the photo sensitive coating is exposed to a bright light, any imperfections in the plate are touched up with Dragon's Blood before they are etched.
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