Today's commemorations mark the initial signing of the Treaty of Waitangi, which eventually involved 540 rangatira around Aotearoa, and representatives of the British Crown. Dame Claudia Orange's writing on the Treaty has contributed to New Zealanders' understanding of this history for over thirty years. Her book on The Treaty of Waitangi was first published in 1987, and Bridget Williams Books has just released an updated edition. Dame Claudia Orange spoke with Julian Wilcox.