Rules of Betrayal
Christopher Reich
Jonathan Ransom (3)
A Week in Winter
Maeve Binchy
Finally Free
Michael Vick
The Berlin Conspiracy
Tom Gabbay
How to Calculate Quickly: Full Course in Speed Arithmetic
Henry Sticker
Speed Mathematics Simplified
Edward Stoddard
The Trachtenberg Speed System of Basic Mathematics
Jakow Trachtenberg
Rapid Math: Tricks and Tips: 30 Days to Number Mastery
Edward H. Julius
More Rapid Math: Tricks and Tips: 30 Days to Number Mastery
Dead Reckoning: Calculating Without Instruments
Ronald W. Doerfler
Short-Cut Math
Gerard W. Kelly