This New Zealand work is in the public domain in New Zealand, because its copyright has expired or it is not subject to copyright (details). According to the New Zealand Copyright Act of 1994 as elaborated on by the Standing Committee on Copyright of the Library and Information Association of New Zealand (LIANZA), as of May 2011:
Type of material
Copyright has expired if ...
A
For photographs, manuscripts, archives, music scores, maps, paintings, and drawings published anonymously, under a pseudonym or the creator is unknown:
photo taken or work published prior to 1 January 1974 (50 years ago)
For photographs, manuscripts, archives, music scores, maps, paintings, and drawings (except A-C)
Creator died before 1 January 1974 (50 years ago)
E
For oral histories, music, computer-generated work and spoken word sound recordings
Released before 1 January 1974 (50 years ago)
F
Published editions2
Released before 1 January 1999 (25 years ago)
1 Some government publications are not subject to copyright, including bills, acts, regulations, court judgments, royal commission and select committee reports, etc. See references [2] or [3] for the full list. 2 means the typographical arrangement and layout of a published work. eg. newsprint.