Website for Adult Literacy Survey

On Non-Verbal Representation by Donald Brook in the British Journal of Aesthetics

Schenck, Ernie. "The Cave of The Forgotten Word." Communication arts 49.4 (2007):214-216.

In the Cave of the Forgotten Word

Visible Language for the expression of scientific Concepts

"Advancing Icon Design for Global Non-verbal Communication" in Visible Langauage v. 40, 2006