A Sermon Preached at the Consecration of the Ven. Archdeacon Hadfield to the See of Wellington, on Sunday, 9th October, 1870.
By William Williams.
Wellington: Printed by T. M'Kenzie, 1870.

The Political Parson: Aspects of the Career of Octavius Hadfield: A Thesis Submitted for the Degree of Master of Arts in History at the Victoria University of Wellington.
By Alan Bellenden Gordon.
Wellington: Victoria University of Wellington, 1966.

Octavius Hadfield and the Waitara Dispute: A Thesis Presented in Partial Fulfilment of the Requirements for the Degree of Master of Arts (and Honours) in History, University of Canterbury.
By Sarah Elizabeth Woods.
Canterbury, New Zealand: University of Canterbury, 1972.

Te Rauparaha and Octavius Hadfield.
By Cynthia Christina Coe.
Otaki, New Zealand: Coehaven Publishing, 1994.

A Discourse Delivered at St. Peter's Church, Te Aro.
Wellington: Robert Stoke, 1851.

One of England's Little Wars.
London: Williams and Norgate, 1860.

Sermon Preached in St. Paul's Church, Dunedin on Trinity Sunday 1871, at the Consecration of the Rev. S.T. Nevill, M.A., to the See of Dunedin.
Dunedin: F. Humffray, 1871.

A Reply to the Question, Is a Miracle Opposed to Reason?
Wellington: Lyon and Blair, 1875.

An Appeal from the Bishop to Church Members of the Diocese of Wellington, in Aid of the Wellington Diocesan Fund.
Wellington: James Hughes, 1876.

A Sermon Preached at the Opening of the General Synod in the Church of St. John, Napier, on Tuesday, April the 3rd, 1883.
Wellington: James Hughes, 1883.

Some Thoughts on the Status and Powers of the General Synod of the Church of the Province of New Zealand Commonly Called the Church of England.
Wellington: O. Hadfield, 1901.

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