Here is an interesting snapshot taken from Thaddeus David's History of Ink. By far one of the toughest tests I have seen for ink & paper..... serious business no doubt....... You can see the entire book at Gutenberg.org..... https://www.gutenberg.org/files/50564/50564-h/50564-h.htm I added a couple of things I have above, of Thaddeus David as a reference and for your enjoyment. I love the line, "As Good As Brains And Money Can Make." Enjoy, Inked