This series of eighty-four drawings was created by Eugene J. Martin between 1969-1971 in Washington D.C. Most of the works are mixed media, felt-tip and pen and ink drawings. All the circles measure 7.5 x 7.5 inches (~ 19 x 19 cm). These artworks can also be viewed at http://youtube.com/nemastoma. The site http://en.wikipedia.org/wiki/Eugene_J._Martin provides links to other Martin works as well.