Clarity,
Office 17622,
PO Box 6945,
London.
W1A 6US
United Kingdom
Phone/ Voicemail:
+44 (0)20 3287 3053 (UK)
+1 (561) 459-4758 (US).
http://inthefamilyway.org/iching/ (the latest updated site)
And: https://web.archive.org/web/20120914203940/https://ichinglivingchange.org/room-yijing-papers-the-foundations/ (Way back machine confirms that the pdf's has been deleted)
Clarity,
Office 17622,
PO Box 6945,
London.
W1A 6US
United Kingdom
Phone/ Voicemail:
+44 (0)20 3287 3053 (UK)
+1 (561) 459-4758 (US).