Question: What was the topic of a 1985 letter written by Archbishop emeritus of Boston born November 4, 1931?

Context paragraphs:
Letter to U.S. Bishops Concerning Masonry: The Letter to U.S. Bishops Concerning Masonry was a letter sent on April 19, 1985, by Bernard Francis Cardinal Law, Archbishop of Boston and chairman of the Committee on Pastoral Research and Practices of the United States Catholic Conference.  The letter was intended to answer confusion about the admissibility of Masonic membership.

Maurice Couture: Maurice Couture, {'1': ", '2': ", '3': ", '4': "} (born November 3, 1926) is a Canadian Archbishop Emeritus and the former Archbishop of Québec.  Born in Saint-Pierre-de-Broughton, Quebec, he was ordained a priest in 1951.  He was appointed Archbishop of Quebec in 1990 and retired in 2002.  In 2003, he was made a Grand Officer of the National Order of Quebec.

Leonard Faulkner: Leonard Anthony Faulkner (born 5 December 1926) is an Australian Roman Catholic clergyman, and was the seventh Archbishop of Adelaide.  Born in rural South Australia, Faulkner served as an Adelaide parish priest and Bishop of Townsville before being appointed Archbishop of Adelaide in 1985.  He is currently Archbishop Emeritus of Adelaide.

Théodore-Adrien Sarr: Théodore-Adrien Sarr (born 28 November 1936) is a Senegalese cardinal of the Roman Catholic Church.  He is currently the Archbishop Emeritus of Dakar, having previously served as Archbishop of Dakar from 2000 to 2014, and before that as Bishop of Kaolack from 1974 to 2000.  He was elevated to the cardinalate in 2007 by Pope Benedict XVI.  Pope Francis accepted his resignation as Archbishop of Dakar, in accordance with Canon 401.1 of the Latin-rite Code of Canon Law, on Monday, 22 December 2014, and appointed Bishop Benjamin Ndiaye, who until then had been serving as Bishop of the Roman Catholic Diocese of Kaolack, in Kaolack, Senegal, as Archbishop-elect of the Roman Catholic Archdiocese of Dakar.  Cardinal Sarr had himself served as Bishop of Kaolack before coming to Dakar.  Cardinal Sarr, 78, will retain his membership in the departments of the Roman Curia and will have the right to vote in a papal conclave until his 80th birthday in November 2016.  Archbishop-elect Ndiaye will be installed as Archbishop of Dakar at a date in the near future.

William Goh: Most Rev Archbishop William Goh Seng Chye, D.D., S.T.L., (; born 25 June 1957) is the fourth and current Archbishop of Singapore.  Archbishop Goh succeed Archbishop Emeritus Nicholas Chia as Archbishop of Singapore on 18 May 2013.  Archbishop Goh was the fourth Rector of St Francis Xavier Major Seminary in Singapore.  He was ordained as a priest on May 1, 1985 by the late Archbishop Gregory Yong at the Church of the Holy Family.

José Luis Escobar Alas: José Luis Escobar Alas (born 10 March 1959), Archbishop of San Salvador in El Salvador, succeeded Archbishop Emeritus Fernando Sáenz Lacalle as the seventh archbishop, a successor of Archbishop Óscar Romero who was assassinated in 1980.

Andrew Yeom Soo-jung: Andrew Yeom Soo-Jung (; born 5 December 1943) is the Korean Roman Catholic Archbishop of Seoul, Cardinal and de facto Primate of Korea since his appointment was announced on 10 May 2012 by Pope Benedict XVI.  Yeom succeeded the Archbishop Emeritus Cardinal Nicolas Cheong Jin-suk and the fifth native Korean Archbishop of Seoul.  In January 2014 it was announced that he will be elevated to the cardinalate at the next consistory on 22 February 2014.  The Metropolitan Archbishop of Seoul also serves as Apostolic Administrator of the Diocese of Pyongyang in North Korea.  Aside from Archbishop, he was also the Chairman of Peace Broadcasting Corporation (Korean: 평화방송 or PBC).  Founded in 1990, this corporation included a Catholic television channel and a radio station, both of which became highly valued Christian voices and tireless champions of values such as peace, reconciliation, the defence of life, dignity and inalienable human rights.

Joachim N'Dayen: Archbishop Emeritus Joachim N'Dayen (born 22 December 1934, in Loko) is a former Roman Catholic Archbishop in the Central African Republic.  He was the Archbishop of the Roman Catholic Archdiocese of Bangui, the capital city of the Central African Republic.  He became Archbishop in September 1970, when he became the first Roman Catholic Archbishop in the country.  He resigned in 2003 and was replaced by Paulin Pomodimo.

Gilbert Marie Michel Méranville: Gilbert Marie Michel Méranville (4 February 1936) is the Roman Catholic archbishop emeritus of the Archdiocese of Fort-de-France in Martinique.  Archbishop Méranville was ordained a priest in 1959, and on 14 November 2003, he succeeded Archbishop Maurice Rigobert Marie-Sainte as the Metropolitan Archbishop of Fort-de-France.  His resignation for age reasons was accepted by Pope Francis on Saturday, 7 March 2015.  That day, Pope named Father David Macaire, O.P., prior of the Dominican convent of La Sainte-Baume, in Toulon, France, as Archbishop-elect of Fort-de-France.  He will be consecrated and installed as archbishop at a date in the near future.

Bernard Francis Law: Bernard Francis Law (born November 4, 1931) is an American cardinal of the Roman Catholic Church.  He is Archbishop emeritus of Boston, former archpriest of the Basilica di Santa Maria Maggiore, and Cardinal Priest of Santa Susanna, the American Catholic church in Rome.

Supporting paragraphs: Letter to U.S. Bishops Concerning Masonry Bernard Francis Law
Answer: the admissibility of Masonic membership