Thomas Shadwell (1668). The Sullen Lovers.: «Play at Catt, Stoolball, Scotch-hopp and Trap-ball.» Sitert i Oxford English Dictionary, Third edition, June 2011; online version March 2012; Francis Willughby, Book of Games (1635-1672), «Scotch Hopper‥. They play with a piece of tile or a little flat piece of lead, upon a boarded floore, or anie area divided into oblong figures like boards». Frå Cram, David, Forgeng, Jeffrey L. og Johnston, Dorothy, The Book of Games of Francis Willughby (1635-1672). A Seventeenth-century Treatise on Sports, Games and Pastimes (Aldershot, 2003); Poor Robin’s Almanack for 1677: «The time when schoolboys should play at Scotch-hoppers.» og 1707: «Lawyers and Physicians have little to do this month, so they may (if they will) play at Scotch-hoppers», The journal of the British Archaeological Association, Volume 26.; Noah WebstersAn American Dictionary of the English language (1828) omtalte «Scotch-hopper» som «a play in which boys hop over scotches and lines in the ground.», Oxford English Dictionary, Third edition, June 2011; online version March 2012
