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Vedic / Speed Math Library
Vedic Mathematics
Singhal, A.: How to Become a Human Calculator
Glover, J.: Vedic Mathematics for Schools, Book 1
Thakur, R.: Advanced Vedic Mathematics
Jagadguru: Vedic Mathematics -- 16 Simple Mathematical Formulae from the Vedas
Tekriwal, G.: Math Sutras -- The Art of Vedic Speed Calculation
Tekriwal, G.: Maths Sutras From Around The World
Speed / Mental Math
Devi, S.: Figuring Made Easy
Stoddard, E.: Speed Mathematics Simplified
Scotts, J.: Secret of Mental Math Arithmetic: 70 Secrets...
Kelly, G.: Short-Cut Math
Bukiloo Publ.: Speed Math for Children
Yamada, T.: The Speed Math Bible
White, J.: Mental Math
Tekriwal, G.: Idiot's Guides Speed Math
Eastaway, R.: Maths on the Back of an Envelope
Handley, B.: Speed Math for Kids
Cutler, A., et al.: The Trachtenberg Speed System of Basic Mathematics