Warren Colburn

Arithmetic Upon the Inductive Method of Instruction

First Lessons in Arithmetic

Introduction to Algebra

Introd. to Algebra upon the Inductive Method of Instruction

Warren Colburn's First Lessons

Colburn's First Lessons

Intellectual Arithmetic

Colburn's First Lessons, Intellectual Arithmetic, upon the Inductive Method

Intellectual Arithmetic: Upon the Inductive Method of Instruction