In 2007 he arranged for the publication of replica volumes of William Playfair's Atlas as well as his Statistical Breviary, the first books on the subject.
In H. Wainer & H. Braun (Eds.), Test Validity (pp. 19-32).
Ian Spence and Howard Wainer in 2001 describe Playfair as "engineer, political economist and scoundrel" while "Eminent Scotsmen" calls him an "ingenious mechanic and miscellaneous writer."
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