Blood, Class and Empire
Christopher Hitchens
The Future Has a Past: Stories
J. California Cooper
The Fall Line
Mark T. Sullivan
Rise to Greatness
David Von Drehle
Dead Reckoning: Calculating Without Instruments
Ronald W. Doerfler
How to Calculate Quickly: Full Course in Speed Arithmetic
Henry Sticker
More Rapid Math: Tricks and Tips: 30 Days to Number Mastery
Edward H. Julius
Rapid Math: Tricks and Tips: 30 Days to Number Mastery
Short-Cut Math
Gerard W. Kelly
Speed Mathematics Simplified
Edward Stoddard
The Trachtenberg Speed System of Basic Mathematics
Jakow Trachtenberg