Gregg Shorthand: Key to Supplementary Exercises in Gregg Shorthand, by John Robert Gregg, 1918. (Google Books)
http://books.google.com/books?id=cHUPAAAAYAAJ&printsec=frontcover&dq=%22gregg+shorthand%22&lr=&as_brr=1&cd=40#v=onepage&q=&f=false
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