Plum Lucky
Janet Evanovich
Stephanie Plum (13.5)
Down River
John Hart
Ray Bradbury Stories, Volume 1
Ray Bradbury
Fer-de-Lance
Rex Stout
Nero Wolfe (1)
Short-Cut Math
Gerard W. Kelly
Dead Reckoning: Calculating Without Instruments
Ronald W. Doerfler
More Rapid Math: Tricks and Tips: 30 Days to Number Mastery
Edward H. Julius
Rapid Math: Tricks and Tips: 30 Days to Number Mastery
The Trachtenberg Speed System of Basic Mathematics
Jakow Trachtenberg
Speed Mathematics Simplified
Edward Stoddard
How to Calculate Quickly: Full Course in Speed Arithmetic
Henry Sticker