WHY visual communication is so powerful — a great introduction to our complex minds: The Creative Brain by Ned Herrmann, originator of the Herrmann Brain Dominance Indicator (HBDI):

Mapping Inner Space: Learning and Teaching Visual Mapping by Nancy Margulies, Nusa Maal, Margaret J. Wheatley

Visual Language: Global Communication for the 21st Century by Robert E. Horn, Stanford University

Many great books, articles and examples of Visual Information by Edward Tufte:

Information Graphics: A Comprehensive Illustrated Reference by Robert L. Harris


International Forum of Visual Practitioners:

The World Café: