About Lewis Vaughn Books by Lewis Vaughn The Power of Critical Thinking 6CE by (author) Chris MacDonald & Lewis Vaughn Writing Philosophy A Guide for Canadian Students, Canadian Edition by (author) Lewis Vaughn & Jillian Scott McIntosh The Power of Critical Thinking 2ce / Creativity for Critical Thinkers Second Canadian Edition by (author) Lewis Vaughn & Chris MacDonald The Power of Critical Thinking Second Canadian Edition by (author) Lewis Vaughn & Chris MacDonald