731994 Advertisement for Bar-Lock typewriters (colour litho) by English School, (19th century); Private Collection; (add.info.: Advertisement for Bar-Lock typewriters, with the legend, \'Get Out of the Ruts and Use the Bar-Lock typewriter, with an image of a donkey pulling a cart with a bottle of ink and a book, with a typewriter inset.); Look and Learn / Valerie Jackson Harris Collection; English, out of copyright.