question: The cathedral that was the home of the organs Dirk Andries Flentrop restored in 1977 was built in sections between what years? 
answer: 1573 to 1813
context: Title: Mexico City Metropolitan Cathedral
  Passage: The Metropolitan Cathedral of the Assumption of the Most Blessed Virgin Mary into Heaven (Spanish: "Catedral Metropolitana de la Asunción de la Santísima Virgen María a los cielos" ) is the largest cathedral in the Americas, and seat of the Roman Catholic Archdiocese of Mexico.  It is situated atop the former Aztec sacred precinct near the Templo Mayor on the northern side of the Plaza de la Constitución in Downtown Mexico City.  The cathedral was built in sections from 1573 to 1813 around the original church that was constructed soon after the Spanish conquest of Tenochtitlan, eventually replacing it entirely.  Spanish architect Claudio de Arciniega planned the construction, drawing inspiration from Gothic cathedrals in Spain.
  Title: Nidaros Cathedral West Front
  Passage: The Nidaros Cathedral West Front ("Nidarosdomens Vestfront"), which includes multiple sculptures, was the final portion of the Nidaros Cathedral in Trondheim, Norway that was restored.  This is the cathedral's main facade and one of the most beautiful and ornate portions of the church.  The restoration of the west face structure took place from 1901 through 1969, and the last statue was erected in 1983.  This part of the church is also the most recent of the original cathedral constructions; archbishop Sigurd Eindrideson laid the cornerstone for the west front in 1248.  The construction was not yet complete when the church was burnt in 1328.  The original design for the west face is not known, but one can assume that it was never built to those original plans; it is reasonable to assume that a screen front similar to that used elsewhere was planned on the west.  Screen fronts were often rectangular and served as a cover to conceal the rest of the church.  English cathedrals from the same period, among others Lincoln Cathedral, Wells Cathedral and Salisbury Cathedral, had similar fronts.  The west front had three entrances and is flanked by two smaller towers on each side of the façade.
  Title: André Boerstra
  Passage: Andries Cornelis Dirk "André" Boerstra (December 11, 1924 – March 17, 2016) was a Dutch field hockey player who competed in the 1948 Summer Olympics and in the 1952 Summer Olympics.  He was born in Bandoeng, Dutch East Indies.  In 1948 he was a member of the Dutch field hockey team, which won the bronze medal.  He played all seven matches as forward.  Four years later he won the silver medal as part of the Dutch team.  He played all three matches as forward.
  Title: Mary Help of Christians Cathedral, Shillong
  Passage: The Cathedral of Mary Help of Christians is a Cathedral in Shillong, Meghalaya.  It is the cathedral of the Roman Catholic Archdiocese of Shillong which covers the [East[Khasi Hills and RI Bhoi district of Meghalaya.  The Cathedral is the principal place of worship of the over 300,000 strong Catholics of the Shillong Archdiocese which covers RI Bhoi and East Khasi Hills district of Meghalaya.  An Archdiocese is a “diocese" or area under the jurisdiction of an Archbishop.  In all there are 33 church districts or “Parishes” in the Shillong Archdiocese.  The Cathedral Church was built over 50 years ago.  Since it also has the “cathedra” – the seat or throne of the Bishop – it is known as a Cathedral Church.  This place of worship stands on the very site of the first Church built by the German fathers.  The earlier 1913 building – the Church of the Divine Saviour – was a wooden structure.  It was destroyed by the Good Friday fire of April 10, 1936.  Built by the first Catholic missionaries to these hills, the Salvatorian Fathers from Germany, it was the first Catholic Cathedral Church in what was then the Mission of Assam.
  Title: Kumurdo Cathedral
  Passage: Kumurdo Cathedral (Georgian: კუმურდო ) is a Georgian Orthodox Cathedral.  It is situated on Javakheti Plateau, 12 km southwest from Akhalkalaki.  According to the inscriptions on the walls, written with the ancient Georgian writing of Asomtavruli, the Kumurdo Cathedral was built by Ioane the Bishop during the reign of king of the Abkhazians Leon III in 964.  During the Middle Ages, Kumurdo was an important cultural, educational and religious center.  The cathedral was restored twice (1930; 1970–1980), but it stands without a dome.  In 2015, a project for full reconstruction of the cathedral was developed.
  Title: Nativity Cathedral, Riga
  Passage: The Nativity of Christ Cathedral (Latvian: "Kristus Piedzimšanas pareizticīgo katedrāle" , Russian: Христорождественский кафедральный собор ), Riga, Latvia was built to a design by Nikolai Chagin and Robert Pflug in a Neo-Byzantine style between 1876 and 1883, with decorations made by the firm of August Volz, during the period when the country was part of the Russian Empire.  It is the largest Orthodox cathedral in the Baltic provinces built with the blessing of the Russian Tsar Alexander II on the initiative of local governor-general Pyotr Bagration and bishop Veniamin Karelin.  The Nativity of Christ Cathedral is renowned for its icons, some of which were painted by Vasili Vereshchagin.  During the First World War German troops occupied Riga and turned its largest Russian Orthodox cathedral into a Lutheran church.  In independent Latvia, the Nativity of Christ Cathedral once again became an Orthodox cathedral in 1921.  Archbishop Jānis Pommers, a native Latvian, played a key part in the defence of the cathedral, including defence from the Latvian government which was extremely unfriendly to Orthodox Church in the first years of an independent Latvia.  In the early 1960s, Soviet authorities closed down the cathedral and converted its building into a planetarium.  The cathedral has been restored since Latvia regained independence from the Soviet Union in 1991.
  Title: Dirk Andries Flentrop
  Passage: Dirk Andries Flentrop (1 May 1910 – 30 November 2003) was a Dutch organ builder.  He built or restored many major organs in the United States and in Europe.  He was noted for his 1977 restoration of two organs from the 17th and 18th centuries in the Mexico City Metropolitan Cathedral.
  Title: Ourense Cathedral
  Passage: Ourense Cathedral (Catedral de Ourense or Catedral do San Martiño) is a Roman Catholic church located in Ourense in northwestern Spain.  Dedicated to St Martin, it was founded in 550.  The first structure was restored by Alonso el Casto.  The present mainly Gothic building was raised with the support of Bishop Lorenzo in 1220.  Its local patroness is Saint Euphemia.  There is a silver-plated shrine, and others of St Facundus and St Primitivus.  The Christ's Chapel (Capilla del Cristo Crucificado) was added in 1567 by Bishop San Francisco Triccio.  It contains an image of Christ, which was brought in 1330 from a small church on Cape Finisterre.  John the Baptist's Chapel (Capilla de San Juan Bautista) was created in 1468 by the Conde de Benavente.  The Portal of Paradise is sculptured and enriched with figures of angels and saints, while the antique cloisters were erected in 1204 by Bishop Ederonio.  The Capilla de la Maria Madre was restored in 1722, and connected by the cloisters with the cathedral.  The eight canons were called Cardenales, as at Cathedral of Santiago de Compostela, and they alone did services before the altar; this custom was recognised as "immemorial" by Pope Innocent III, in 1209.  The cathedral, which has undergone an impressive transition of architectural styles of Romanesque, Gothic, Renaissance, Baroque and Neoclassical, was built to a Latin Cross plan.  It has been a functional basilica since 1887.  The cathedral has a crucifix that is held in great reverence all over Galicia.
  Title: Saint Thomas Aquinas Cathedral
  Passage: Saint Thomas Aquinas Cathedral is the mother church of the Roman Catholic Diocese of Reno, Nevada, United States.  It is located at 310 W. 2nd Street in Reno.  The cathedral was built in 1908 as the rise in Reno's Catholic population warranted a larger church.  The cathedral was nearly destroyed by a fire in 1909 and was restored the following year.  The Cathedral is staffed by Conventual Franciscans: Order of the Friars, Minor.
  Title: Wilhelm Sauer
  Passage: Wilhelm Carl Friedrich Sauer (23 March 1831 – 9 April 1916) was a German pipe organ builder.  One of the famous organ builders of the Romantic period, Sauer and his company "W. Sauer Orgelbau" built over 1,100 organs during his lifetime, amongst them the organs at Bremen Cathedral, Leipzig's St. Thomas Church, and Berlin Cathedral, which is considered to be "his final great masterpiece".
citations: Mexico City Metropolitan Cathedral Dirk Andries Flentrop