Ribbon marker.
From p. 299 of Experiments And Observations On Electricity, Made At Philadelphia in America by Benjamin Franklin (1769). Original from the Bavarian State Library. Digitized November 18, 2009.
September 19, 2012
June 16, 2012
Marking ribbon, two ways.
From the front matter of Cato’s Letters, v. 3, ed. John Trenchard and Thomas Gordon (1724). Original from the University of Michigan. Digitized September 21, 2006.
