Truth and Lies
Norah McClintock
Mike and Riel (3)
Dawn of the Dreadfuls
Steve Hockensmith
1977 - My Laugh Comes Last
James Hadley Chase
Sextant
David Barrie
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