Contemporary pink highlighter.
Throughout How to Argue and Win by Grenville Kleiser (1910). Original from the University of Michigan. Digitized February 26, 2008.
Smeared and pixellated University of California library stamp.
From the front matter of The Scripture Text Book, 3rd ed. (1847).
Hand of employee with pink gloves: application of two different filters, fore-edge shown, attempted autocorrect of fingers.
From p. 196 of The Chemical Works of Caspar Neumann, vol. 2, by Caspar Neumann, ed. William Lewis (1773). [Here]
Employee’s pink-gloved fingers, on a blue ground.
From the front matter of The Poetical Works, by George Canning (1827). [Here]