Thomas Jefferson and His Copying Machines
By Silvio A. Bedini
1984 Hard Cover
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“Thomas Jefferson’s delight in mechanical copying and writing devices has been noted by several of his biographers but generally dismissed as another example of his interest in gadgetry. What has been overloo...
Pioneer Plastic The Making & Selling of Celluloid By Robert Friedel
1983 Hard Cover
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"In 1869, an Albany printer discovered how to mix nitrocellulose with camphor under high pressure to yield a hard, shiny, moldable substance which he and his brother called celluloid. This discovery may in...
The Steel Pen Trade 1930-80 By A.A.S. Charles
1983 Hard Cover
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"The steel pen trade 1930 – 1980 Towards the end of the 19th century the book entitled “The Story of the Invention of Steel Pens”, with a description of the manufacturing processes by which they were pr...
