The history of Aguleri, M. IDIGO, London, 1955, 118 p.
The native Law and Custom, M. Okenwa OLISAH, 1963, 40 p.
Black Academy Review : Controversy in Education, Government Take-Over of schools in Nigeria, 1974, 92 p.
The Church speaks to Africa, Some aspects of Christianity in Nigeria, Stephen EZANYA, Ibadan, 1976.
Christian Arts in Nigeria. Holy Trinity Cathedral, juin 1979, 36 p.
Nigeria prepares for Pope John Paul II. Joint Pastoral Letter of the Nigerian Catholic Bishops, 08.12.1981.
"Put out into deep water", pastoral letter of Bishops of Onitsha Province, first century celebrations, 1885-1985.
"Men of Faith" Mrs Onyedika Chidi IMEGAKWE, Onitsha, 1985, 154 p. (theater).
A History of the Catholic Church in Northern Nigeria, Fr R HICKEY, 1981.
Church and Inculturation, a century of Roman Catholicism in Eastern Nigeria, Fr E Elochuckwu UZUKWU cssp, Spiritan Booklets n° 1, 1985.
Evangelization in South-Eastern Nigeria, 1885-1985, Fr Elochukwu UZUKWU, Spiritan Booklets n° 2, Enugu, 1985, 28 p.
Listen : The Church speaks, Joint Pastoral Letter of Catholic Bishops of Nigeria, 01.10.1985, Lagos.
A catholic View of Education, by the Catholic Hierarchy of Eastern Nigeria (no date).
The Torch (mars 1986, n° 81) : Centenary Celebrations of Catholicism in Eastern Nigeria (1885-1985), by the students of Bigard Memorial Seminary, Enugu., 45 p.
Bishop J. Shanahan's centenary celebration (06.06.1971) : programme.
Bigard aujourd'hui (Cercle français du Grand séminaire, Enugu) n° 1, avril 1971.
Osservatore Romano (14-15.07.1974) : Riunione dei missionari Spiritani africani.
The greatest Investment, Lenten Pastoral, Mgr ARINZE, 1974.
The Methods and Ideology of the Holy Ghost Fathers in Eastern Nigeria (1885-1905), P. CLARKE, Oxford, tiré-à-part (Journal of Religion, vol. 6, facs. 2, fév. 1975.
African Response to Missionary Activity in Nigeria, Philip KULP, Philadelphia, African Studies Association, 15-18.10.1980.
Holy Trinity Parish (1886-1986), peoples and Events.
The Spiritan CENTENARY celebrations (Onitsha 29-30.11.1985).
"The Task Ahead" conférence du P. James OKOYE (11.09.1986).
Devis estimatif pour l'extension du séminaire d'ISIENU.
"Resting by the Niger. A brief history of the Missionaries buried in the graveyard at Holy Trinity Cathedral, Onitsha, Nigeria", Soeur Thérésa Ogochukwu STAPLETON (13.11.2002).
Etude sur le pays et l'évangélisation des Ibibios, par le P. KIRCHNER (en allemand) : "Heidentum und Christentum im Lande der Ibibios : II Teil. Christentum.
Kapitel. Der Protestantismus im Ibibiolande.
Kapitel. Freimaurertum und Islam im Ibibiolande. B. Geschichte einer Missionsgründung.
Kapitel. Die Anfänge der Katholischen Mission im Ibibiolande; Calabar (1903-1914) Die Gründung und der materielle Ausbau Anua's. Die geistliche Eroberung und besetzung des Landes. Missionsorganisation. Die organisation des Schul- und Kirchenpfennigs in Anua. Im dienste der Frau.