When the Missionary Church of Canada first came into existence in 1979, Rev. Alf Rees pushed to have a gathering of Missionary Church Presidents from around the world. The First International Missionary Church Conference was held in Jamaica Feb. 22 to March 1, 1979. (Emphasis, April 15, 1979, p. 12-13). The second international conference of Missionary Church National Presidents was held Sept. 8-11, 1986 in the Dominican Republic (Emphasis, Nov., 1986, p. 12). There was later a lull in its activity but it was revived again in about the year 2000 and its name changed to World Partners International.

The President and World Partners Director of the EMCC attend each of the gatherings.  Representatives from Brazil, Colombia, Venezuela, Ecuador, Mexico, Haiti, Jamaica, Dominican Republic, USA and Canada gathered in April, 2013.

The United Missionary Church of Africa was incorporated in Nigeria in 1956. In 1978 the United Missionary Society turned over to the UMCA the work and property which it had begun and developed. Many missionaries stayed in Nigeria after the turnover working under the UMCA. These missionaries soon organized first as The Fellowship of Invited Missionaries and then as World Partners Nigeria.
The fonds include original documents effecting the transfer of responsibility from the U. M. S. to the U. M. C. A., They include minutes of board meetings, documents related to the quota system for registering expatriates ministering in the country and to the educational and medical systems developed. Most of these are incomplete whether financial statements or minutes, or quota controls.

Records of the work of Phil Delsaut as President of the EMCC.

Records from the Spanish mission field as part of World Partners

The work in Nigeria began in 1901 with the Banfields as missionaries. In 1978 the United Missionary Society formally turned the work over to the United Missionary Church of Africa. However, a number of missionaries continued and worked under the UMCA organized first as the Fellowship of Invited Missionaries and then as World Partners Nigeria.

Denomination's missions Mexico including its history, operations and governance

Documentation of the missionary endeavors of the United Missionary Society in Brazil from its beginnings in 1955 to the transfer of most of the responsibility to the indigenous Missionary Church of Brazil and to the completion of its work in Brazil.

Administration and ministry of the women's work in the MCC.

Documents related to the ministry of the Missionary Church of Canada as a denomination prior to its merger in 1993.

Documents relating to the Missionary Church of Canada as a committee of the Missionary Church, 1979 to 1988.