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Lithographic chalk

The oldest tools for litho drawing, they are greasy sticks used to draw a design onto the prepared surface ready for lithographic printing. There are many types of crayon or ink in use now, but they generally all contain wax, tallow fat, and soap, as well as the black carbon pigment.

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Richard Watson Dixon
by William Rothenstein
1897
NPG 3171

John Desmond Bernal
by Edmond Xavier Kapp
1920s
NPG 6090

Frank Short
by William Rothenstein
1921
NPG 4804

Anthony Eden, 1st Earl of Avon
by Edmond Xavier Kapp
1935
NPG 4907

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