1913: "History of the Exponential and Logarithmic Concepts", American Mathematical Monthly 20: Page 5 From Napier to Leibniz and John Bernoulli I, 1614 — 1712 Page 35 The Modern Exponential Notation (continued) Page 75 : The Creation of a Theory of Logarithms of Complex Numbers by Euler, 1747 — 1749 Page 107 : From Euler to Wessel and Argand, 1749 — 1800, Barren discussion. Page 148: Generalizations and refinements effected during the nineteenth century : Graphic representation Page 173: Generalizations and refinements effected during the nineteenth century (2) Page 205: Generalizations and refinements effected during the nineteenth century (3)