Darwin, Francis & Seward, A. C. eds. 1903. More letters of Charles Darwin. A record of his work in a series of hitherto unpublished letters. London: John Murray. Volume 1.
Found 20 years ago in Middlesex County CT. Stone multi-tool? : r/Arrowheads
May 2008 Issue - Alpha Delta Kappa
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Trademarks Journal Vol. 69 No. 3529
Back to School Series: Slate Pencils – A Victorian Passage
School Slate and Pencil
School Slate & Pencil, Victorian, Original Object Lessons - Childhood & Games: Victorians
Slate Board and Soapstone Pencils 18th Century Reproduction
Prison Literacy: Implications for Program and Assessment Policy.
Slates, crayons, and quills: Back to school supplies of the past