Various authors - Eleven uniform editions in the series "Thinking with Mathematics" - Boston, D. C. Heath and Company - Softcover: stapled, illustrated paper binding - 13.50x20.30cm - Good/very good copies: some traces of use to the cover, sporadic wear, text blocks clean and blank, rare editions. This lot contains: 1. 1966 - Adrien L. Hess - Mathematics, Projects Handbook - IV+60pp. - Reissued in this format - original copyright 1962 2. 1963 - James D. Bristol - The Concept of a Function - VI+66pp. - 1st edition 3. 1965 - James D. Bristol - Graphing Relations and Functions - VI+64pp. - Reissued in this format - original copyright 1963 4. 1967 - James D. Bristol - An Introduction to Linear Programming - VI+66pp. - Reissued in this format - original copyright 1963 5. 1966 - John E. Yarnelle - Finite Mathematical Structures - VI+66pp. - Reissue in this format - original copyright 1964 6. 1966 - Walter Prenowitz & Henry Swain - Congruence and Motion in Geometry + X+97p. - 1st edition 7. 1966 - Richard Spreckelmeyer & Kenneth Mustain - The Natural Numbers - VI+63p. - Reissue in this format - original copyright 1963 8. 1966 - Richard Spreckelmeyer - The Integers - VIII+63p. - Reissue in this format - original copyright 1964 9. 1965 - John E. Yarnelle & Richard Spreckelmeyer - The Rational Numbers - VI+73p. - 1st edition 10. 1966 - Richard Spreckelmeyer - The Real Numbers - VIII+54p. - Reissue in this format - original copyright 1964 11. 1965 - Richard Spreckelmeyer - The Complex Numbers - X+49p. - 1st edition * Richard L. Spreckelmeyer (1929-2015) was an American mathematics and statistics professor at Memphis State University.