2007 mathematics book by Demaine and O'Rourke

decorative artwork by Erik Demaine, Martin Demaine, Green Balance, 2011, Mi-Teintes watercolor paper

decorative artwork by Erik Demaine, Martin Demaine, Hugging Circles, 2011, Zanders Elefantenhaut paper (elephant hide paper)

decorative artwork by Martin Demaine, Erik Demaine, Natural Cycles, 2009, Zanders Elefantenhaut paper (elephant hide paper)