Te Aka: Maori-English dictionary
Ngata: Maori-English dictionary & translation
of phrases
Panui: Maori-English dictionary 
Dictionary of the Maori Language by Herbert William
Williams (1957)
Dictionary of the New Zealand Language
& Concise Grammar, by Herbert William Williams (1852)
Maori-Polynesian Comparative Dictionary by Edward Robert
Tregear (1891) or another version
Maori keyboard to type the long voyelles: ā ē ī ō ū
pronunciation of the Maori language & vocabulary (with sound)
First Lessons in Maori by William Leonard Williams (1930)
First Lessons in the Maori Language with
a Short Vocabulary, by William Leonard Williams (1862)
Maori-English tutor and vade mecum: grammar &
vocabulary, by Henry Stowell (1911)
Grammar of the New Zealand language by Robert
Maunsell (1882) or 1862 edition
Grammar and Vocabulary of the Language of New Zealand
by Samuel Lee & Thomas Kendall (1820)
books about Maori language: Google books
& Internet
archive
online books in Maori & English
Hinemoa: text in Maori (legend) with notes &
Maori-English vocabulary, by H. J. Fletcher
the Bible in Maori & other languages
Ka whānau mai ana te tangata he rangatiratanga tōna, he mana tangata ōna, ā e wātea ana te ao ki a ia.
He pūmanawa kei ia tangata, ko te pūmanawa mo te wānanga kaupapa, ko te pūmanawa mo te wehe i te tika me te hē, ā, ko te tūmanako ka mahi
tahi te tangata i runga i te whakaaro whanaungatanga me te whakaaro pai tētahi ki tētahi.
First article in many languages
Declaration of the Human rights: bilingual text in Maori, Tahitian & other languages
New Zealand: maps & documents