(Note: etching is one of the 4 types of intaglio techniques)
Selections  from the Human Equations  series

The Happy Wanderer on the Dead Tree Path 2011  Intaglio and chine colle  20"x 16"	A Fantasy of Nonsense 2011  Intaglio and chine colle  12" x 9"

The Bridge Dwellers  2012 Intaglio and chine colle  18"x 12"	Finding the Center  2009 Intaglio and multi-colle  10 3/4"x 7 3/4"	Knowledge Seeker on Break  2008 Intaglio and chine colle  12"x 9"

The Mathematician   2000  Color intaglio  8"x 7"	Creating An Egghead   2002 Color intaglio   18"x 12"	Moving Knowledge  2001 Color intaglio   8"x 7"

Creating A Theorem 1997 Intaglio and multi-colle  20"x 16"	Bacchus Enjoying His Knowledge 1998 Intaglio and Multi-colle 12"x 18"	Melancholia of Knowledge 1998 Intaglio and multi-colle  20"x 16"

Artificial Knowledge  2003 Intaglio and chine colle  11"x 9 1/2"	Book of Knowlwdge 1998 Intaglio and multi-colle  18"x 12"	Useless Knowledge   2003 Intaglio and chine colle   11 1/2" x 7 1/2"

Fun With Knowledge  2003 Intaglio and chine colle 7"x 5"	Man Juggling Knowledge 2005 Intaglio and chine colle  7"x 5"	Vanity  2002 Intaglio  7"x 5"