Slate Pencils, circa 1875 - The Henry Ford
In the nineteenth century, schoolchildren used slates to practice handwriting and arithmetic without wasting precious paper. Slate pencils were made of soapstone or softer pieces of slate rock, sometimes wrapped in paper like this one. Many students remember the sound of the slate pencil -- like nails on a chalkboard. In the late nineteenth/early twentieth century, chalk was used instead.
The Goodriches: An American Family
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Schoolcraft - AbeBooks
