The Cyclopedia of New Zealand [Auckland Provincial District]
The Opononi Post And Telephone Office
The Opononi Post And Telephone Office is situated eight miles from Whirinaki, and two miles from Omapere and was opened in 1892. There is a regular mail service despatched on Tuesday at three p.m., the incoming mail arriving at midnight, and an occasional mail service from Onehunga by West Coast steamers.