Question: Adam Clayton Powell Jr. represented a large neighborhood in the US House of Representatives that was formally organized in what year?

Context articles: Mount Morris Park Historic District
Adam Clayton Powell Sr.
St. Nicholas Historic District
Adam Clayton Powell Jr.
Abyssinian Baptist Church
Adam Clayton Powell Jr. State Office Building
Adam Clayton Powell IV
Harlem
St. Philip's Episcopal Church (Manhattan)
Manhattanville, Manhattan

Mount Morris Park Historic District was designated a historic district by New York City Landmarks Preservation Commission in 1971, and is part of the larger Mount Morris Park neighborhood.
 It is a large 16-block area in west central Harlem.
 The boundaries are West 118th and West 124th Streets, Fifth Avenue, and Adam Clayton Powell Jr.
 Boulevard (Seventh Avenue).
 "Doctor's Row" comprises the nearby stretch of West 122nd Street, Mount Morris Park West and Malcolm X Boulevard; one of the doctors of "Doctor's Row" was the father of the composer Richard Rodgers.
 Mount Morris Square, the core of the district, is now called Marcus Garvey Park.
Adam Clayton Powell (May 5, 1865 – June 12, 1953) was an American pastor who developed the Abyssinian Baptist Church in Harlem, New York as the largest Protestant congregation in the country, with 10,000 members.
 He was a community activist, author, and the father of Congressman Adam Clayton Powell Jr. Born into poverty in southwestern Virginia, Powell worked to put himself through school and Wayland Seminary, where he was ordained in 1892.
The St. Nicholas Historic District, known colloquially as "Striver's Row", is a historic district located on both sides of West 138th and West 139th Streets between Adam Clayton Powell Jr.
 Boulevard (Seventh Avenue) and Frederick Douglass Boulevard (Eighth Avenue) in the Harlem neighborhood of Manhattan, New York City.
 It is both a national and a New York City district, and consists of row houses and associated buildings designed by noted architects and built in 1891-93 by developer David H. King, Jr.
 These are collectively recognized as gems of New York City architecture, and "an outstanding example of late 19th-century urban design":
Adam Clayton Powell Jr. (November 29, 1908 – April 4, 1972) was a Baptist pastor and an American politician, who represented Harlem, New York City, in the United States House of Representatives (1945–71).
 He was the first person of African-American descent to be elected from New York to Congress.
 Oscar Stanton De Priest of Illinois was the first black person to be elected to Congress in the 20th century; Powell was the fourth.
The Abyssinian Baptist Church, located at 132 West 138th Street between Adam Clayton Powell Jr.
 Boulevard and Lenox Avenue in the Harlem neighborhood of Manhattan, New York City, was built in 1922-23 and was designed by Charles W. Bolton & Son in Gothic Revival and Tudor Revival styles – it has also been described as "Collegiate Gothic".
 It features stained glass windows and marble furnishings The church is noted for its ministers, including Adam Clayton Powell, Sr. and Adam Clayton Powell, Jr. Over the years, the church has served as a place for African American spirituality, politics and community.
The Adam Clayton Powell Jr.
 State Office Building, originally the Harlem State Office Building, is a nineteen-story, high-rise office building located at 163 West 125th Street at the corner of Adam Clayton Powell Jr.
 Boulevard in the Harlem neighborhood of Manhattan, New York City.
 It is named after Adam Clayton Powell Jr, the first African-American elected to Congress from New York.
 It was designed by the African-American architecture firm of Ifill Johnson Hanchard in the shape of an African mask in the Brutalist Architecture style.
 It is the tallest building in Harlem, overtaking the nearby Hotel Theresa.
Adam Clayton Powell IV (born Adam Clayton Powell Diago in 1962) is an American politician from the state of New York.
 He was a member of the New York State Assembly from 2001 to 2010.
 From 1992–1997, he served as New York City Council Member representing East Harlem and parts of the Upper West Side and the South Bronx.
 Beginning in 2001, Powell represented the 68th Assembly District, which includes parts of Harlem and East Harlem.
 He was defeated by Charles Rangel in the 2010 Democratic Primary for the seat of the 15th Congressional District.
Harlem is a large neighborhood in the northern section of the New York City borough of Manhattan.
 Since the 1920s, Harlem has been known as a major African American residential, cultural and business center.
 Originally a Dutch village, formally organized in 1658, it is named after the city of Haarlem in the Netherlands.
 Harlem's history has been defined by a series of economic boom-and-bust cycles, with significant population shifts accompanying each cycle.
St. Philip's Episcopal Church is a historic Episcopal church located at 204 West 134th Street, between Adam Clayton Powell Jr.
 Boulevard and Frederick Douglass Boulevard in the Harlem neighborhood of Manhattan, New York City.
 Its congregation was founded in 1809 in the notorious Five Points neighborhood by free Africans worshiping at Trinity Church, Wall Street as the Free African Church of St. Philip, and is the oldest black Episcopal parish in New York City.
 Historically, it was an extremely influential institution in Harlem.
Manhattanville (also known as West Harlem or West Central Harlem) is a neighborhood in the New York City borough of Manhattan bordered on the north and south by West 134th Street and West 122nd Street, respectively; on the west by Morningside Park and on the east by Adam Clayton Powell Jr.
 Boulevard.
 Other sources show the neighborhood bordered on the north and south by West 135th Street and West 123rd Street, respectively; on the west by the Hudson River and on the east by the campus of City College.