I came across "Galaxy of Mathematicians", Volume-1, published by the Pie Mathematics Association, Chennai. The book gives the brief life histories of Euclid, Archimedes, Pythagoras, Rene Descartes, Isaac Newton, Leibniz, Fermat, Gauss, Euler and Erdos along some of their important works. The life of Leibniz speaks of the 'Calculus Wars', his study of binary numbers, arrays/matrices leading to 'stepped reckoner (calculator)',and why he deserves the title, "Father of Applied Sciences". This is a good introduction to the original works of the authors mentioned.
The back cover text on the book says the publisher association is for removing mathphobia. Surely we need more such groups to grow and nurture mathematics!