Congregation Emanu-El of New York
Temple Emanu-El of New York is the first Reform Jewish congregation in New York City and, because of its size and prominence, has served as a flagship congregation in the Reform branch of Judaism since its founding in 1845. Its landmark Romanesque Revival building on Fifth Avenue is one of the largest synagogues in the world. In size, it rivals many of the largest European synagogues such as Grand Choral Synagogue of St. Petersburg, Moscow Choral Synagogue, and the Budapest Great Synagogue.  Emanu-El means "God is with us" in Hebrew.
The congregation currently comprises approximately 2,000 families and has been led by Senior Rabbi Joshua M. Davidson since July 2013.  The congregation is located at 1 East 65th Street on the Upper East Side of Manhattan. The Temple houses the Bernard Museum of Judaica, the congregation's Judaica collection of over 1,000 objects.
The congregation was founded by 33 mainly German Jews who assembled for services in April 1845 in a rented hall near Grand and Clinton Streets in Manhattan's Lower East Side. The first services they held were highly traditional. The Temple (as it became known) moved several times as the congregation grew larger and wealthier.
In October 1847, the congregation relocated to a former Methodist church at 56 Chrystie Street. The congregation commissioned architect Leopold Eidlitz to draw up plans for renovation of the church into a synagogue.  Radical departures from Orthodox religious practice were soon introduced to Temple Emanu-El, setting precedents which proclaimed the principles of 'classical' Reform Judaism in America. In 1848, the German vernacular spoken by the congregants replaced the traditional liturgical language of Hebrew in prayer books. Instrumental music, formerly banished from synagogues, was first played during services in 1849, when an organ was installed. In 1853, the tradition of calling congregants for aliyot was abolished (but retained for bar mitzvah ceremonies), leaving the reading of the Torah exclusively to the presiding rabbi. By 1869 the Chrystie Street building became the home of Congregation Beth Israel Bikur Cholim.  
Further changes were made in 1854 when Temple Emanu-El moved to 12th Street. Most controversially, mixed seating was adopted, allowing families to sit together, instead of segregating the sexes on opposite sides of a mechitza. After much heated debate, the congregation also resolved to observe Rosh Hashanah for only one day rather than the customary two.
In 1857 after the death of Founding Rabbi Merzbacher, German speakers still formed a majority of the congregation and appointed another German Jew, Samuel Adler, to be his successor.
The 1870s and 1880s witnessed further departures from traditional ritual. Men could now pray without wearing kippot to cover their heads. Bar mitzvah ceremonies were no longer held. The Union Prayer Book was adopted in 1895.
Felix Adler, the founder of the Ethical Culture movement, came to New York as a child when his father, Samuel L. Adler, took over as the rabbi of Temple Emanu-El, an appointment that placed him among the most influential figures in Reform Judaism.
In 1924, Lazare Saminsky became music director of the Temple, and made it a center of Jewish music. He also composed and commissioned music for the Temple services.
In January 1926, the existing synagogue (built in 1868), was sold to the developer Benjamin Winter, Sr. for $6,500,000 who then sold it to Joseph Durst in December 1926 for $7,000,000.   In 1927, Durst demolished the building to make room for commercial development. 
Emanu-El merged with Temple Beth-El in New York, New York on April 11, 1927, and both are considered co-equal parents of the current Emanu-El. In 1929, the congregation moved to its present location at 65th Street and Fifth Avenue, where the Temple building was constructed to designs of Robert D. Kohn  on the former site of the Mrs. William B. Astor House. The vast load-bearing masonry walls support the steel beams that carry its roof. The hall seats 2,500, larger than St Patrick's Cathedral. 
By the 1930s, Emanu-El began to absorb large numbers of Jews whose families had arrived in poverty from Eastern Europe and brought with them their Yiddish language and devoutly Orthodox religious heritage. In contrast, Emanu-El was dominated by affluent German-speaking Jews whose liberal approaches to Judaism originated in Western Europe, where civic emancipation had enticed Jews to discard many of their ethnoreligious customs and embrace the lifestyles of their neighbors. For the descendants of Eastern European immigrants, joining Temple Emanu-El often signified their upward mobility and progress in assimilating into American society. However, the intake of these new congregants also helped to slow or halt, if not force a limited retreat from, the 'rejectionist' attitude which 'classical' Reform had espoused towards traditional ritual.
- Charles Benenson
- Robert A. Bernhard 
- Dorothy Lehman Bernhard
- Milton H. Biow
- Leon Black
- Harvey R. Blau 
- Paul Block
- Michael Bloomberg
- Lyman Bloomingdale
- Samuel Bloomingdale 
- Benjamin Buttenwieser
- Barbaralee Diamonstein-Spielvogel
- Charles Frohman
- Bernard Gimbel
- Alan "Ace" Greenberg
- David M. Heyman
- Martin Kimmel
- Alfred J. Koeppel
- Andrew Lack
- Abraham E. Lefcourt 
- Adele Lewisohn Lehman 
- Herbert H. Lehman
- Irving Lehman
- Solomon Loeb
- Louis Marshall
- Bernard H. Mendik
- William A. Moses 
- Adolph Ochs
- Milton Petrie
- Victor Potamkin
- Joan Rivers
- Chester H. Roth 
- Simon F. Rothschild 
- Frank Russek 
- Mel Sachs
- David Sarnoff
- Jacob Schiff 
- M. Lincoln Schuster
- Sime Silverman
- Carl Spielvogel
- Eliot Spitzer
- Oscar S. Straus
- Lewis L. Strauss
- Sarah Lavanburg Straus
- Harold Uris
- Felix M. Warburg
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- The San Bernardino County Sun: "N. Y. Church Site Sold for $7,000,000 for Skyscraper Use" December 15, 1926 | Temple Emanu-El, at the north-cast corner of Forty-third street, conceded to be one of the most valuable pieces of real estate of its size in the world, has been sold to Joseph Durst, vice president of the Capital National bank, at a valuation of $7,000,000, almost $370 a square foot. Mr. Durst plans to erect a 40-story office building on the site when he gains possession In May, 1928. The temple was purchased from the congregation last January by Benjamin Winter, real estate dealer, for $6,500,000.
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