Knots and Celtic Interlace are symbolic of simultaneous spatial opposition, unity and interplay that allow continuous lines to create harmony. Historically, knots have represented ancestry and ideas about memory and continuity. In the Middle Ages, knots were also associated with musical notation in Scotland. Kilgour has published on the concept, including his book Interspace: A Study in Spatial Relationships. Bodies of work include drawings, paintings, etchings, woodcuts, silkscreen prints and sculpture. For information about available pieces or commissions, access CONTACT details.