Three Numbers was published by Toothpaste Press in 1976 and is copyright 1976 Jim Hanson and Steve Levine. Reasons for the Sky was published by Toothpaste Press in 1979 and is copyright 1979 Jim Hanson.
All material on this website, the copyright of which is not otherwise noted, is copyright 2008-2011 Jim Hanson. All Rights Reserved. No reproduction or approximation may be created in any medium for any use without specific written permission from the artists.