National Center for Transgender Equality

1111 19th Street is a high-rise office building in Washington, D.C. The building rises 12 floors and 157 feet (48 m) in height. The building was designed by architectural firm Heery International and was completed in 1979. As of July 2008, the structure stands as the 24th-tallest building in the city, tied in rank with 1620 L Street, 1333 H Street, 1000 Connecticut Avenue, The Republic Building, 1010 Mass, the Army and Navy Club Building and the Watergate Hotel and Office Building. 1111 19th Street is an example of modern architecture, and is composed almost entirely of office space, with 827,000 square feet (77,000 m2) of commercial area; the three basement levels are used as parking space, containing a 278-spot parking garage.

Population Services International (PSI) is a 501(c)(3) registered nonprofit global health organization with programs targeting malaria, child survival, HIV, and reproductive health. PSI provides products, clinical services and behavior change communications for the health of people in high-need populations.

The Competitive Enterprise Institute (CEI) is a non-profit libertarian think tank founded by the political writer Fred L. Smith Jr. on March 9, 1984, in Washington, D.C., to advance principles of limited government, free enterprise, and individual liberty. CEI focuses on a number of regulatory policy issues, including business and finance, labor, technology and telecommunications, transportation, food and drug regulation, and energy and environment in which they have promoted climate change denial. Kent Lassman is the current President and CEO. According to the 2017 Global Go To Think Tank Index Report (Think Tanks and Civil Societies Program, University of Pennsylvania), CEI was number 59 (of 90) in the "Top Think Tanks in the United States".

The Golden Triangle is a neighborhood and business improvement district (BID) in Washington, D.C. Covering 43 blocks, it encompasses the western part of Washington's central business district, running from the front yard of the White House's north side to Dupont Circle and from 16th Street NW to 21st Street NW and including sections of K Street and Connecticut Avenue. The commercial neighborhood is home to more than 3,000 organizations, 200 restaurants, 300 shops and retailers, 7 hotels, and 6 national parks.The Golden Triangle BID was created in 1997 by the District of Columbia City Council and approved by Mayor Marion Barry.The Golden Triangle BID is supported by a special assessment collected by the District of Columbia from owners of property within the BID's boundaries. Businesses that are located within the Golden Triangle BID's boundaries are automatically members of the BID. The BID is governed by a board of directors composed of up to twenty-three such members.

The Center for Education Reform is an education reform organization headquartered in Washington, D.C. Founded in 1993, CER advocates for school choice.

The Washington Institute for Near East Policy (WINEP or TWI, also known simply as The Washington Institute) is a pro-Israel American think tank based in Washington, D.C., focused on the foreign policy of the United States in the Near East. WINEP was established in 1985 with the support of the American Israel Public Affairs Committee (AIPAC) and the funding of many AIPAC donors, in order to provide higher quality research than AIPAC's publications. John Mearsheimer and Stephen Walt described WINEP as "part of the core" of the Israel lobby in the United States.

The Electronic Registration Information Center (ERIC) is a nonprofit organization in the United States whose goal is to improve electoral integrity by helping states improve the accuracy of voter rolls, increase access to voter registration, reduce election costs, and increase efficiencies in elections. ERIC is operated and financed by state election agencies and chief election officials.

The Patient-Centered Outcomes Research Institute (PCORI) is a United States-based non-profit institute created through the 2010 Patient Protection and Affordable Care Act. It is a government-sponsored organization charged with funding comparative effectiveness research that assists consumers, clinicians, purchasers, and policy makers to make informed decisions intended to improve health care at both the individual and population levels, according to the Institute of Medicine. Medicare considers the Institute's research in determining what sorts of therapies it will cover, although the institute's authorizing legislation set certain limits on uses of the research by federal health agencies.

National Association of Clean Water Agencies (NACWA) represents the interests of publicly owned wastewater treatment facilities, collection systems, and stormwater management agencies before the United States Congress, several Federal agencies, and in the courts. National Association of Clean Water Agencies advocates for federal funding for clean water agencies and for responsible national policies that advance clean water and a healthy environment.

Henry Wadsworth Longfellow is a bronze statue, by William Couper, and Thomas Ball. The statue depicts American poet Henry Wadsworth Longfellow. It is located at the intersection of M Street and Connecticut Avenue, N.W. Washington, D.C., and was dedicated on May 7, 1909.After the death of Henry Wadsworth Longfellow in 1882, there were several plans to memorialize him. His bust was placed at Poets' Corner in Westminster Abbey in 1884 and a statue of the poet by Franklin Simmons was unveiled in his native town of Portland, Maine, at what became known as Longfellow Square. For the statue in Washington, an association was founded to raise money for the effort, ultimately earning $21,000 by subscribers. Additionally, Congress offered another $4,000 and the site. Members of the organization included Andrew Carnegie, Henry Cabot Lodge, Charles William Eliot, Edward Everett Hale, Julia Ward Howe, and Curtis Guild. Theodore Roosevelt served as Honorary Regent. It was unveiled in 1909 by the poet's granddaughter Erica Thorp in the presence of Chief Justice Melville Fuller and the United States Marine Band.

The Embassy of Honduras in Washington, D.C. is the diplomatic mission of Honduras to the United States. It is located at 1220 19th Street, Northwest, Washington, D.C. Separately, Honduras has a consulate-general located at 1990 M St NW, Washington, D.C. The embassy also operates consulates-general in Atlanta, Boston, Charlotte, Chicago, Dallas, Houston, Los Angeles, McAllen, Miami, New Orleans, New York City, San Francisco and Seattle.The ambassador is Luis Fernando Suazo Barahona.

The name "M Street" refers to two major roads in the United States capital of Washington, D.C. Because of the Cartesian coordinate system used to name streets in Washington, the name "M Street" can be used to refer to any east-west street located twelve blocks north or south of the dome of the United States Capitol (not thirteen blocks, as there is no J Street). Thus, in all four quadrants of the city there are streets called "M Street", which are disambiguated by quadrant designations, namely, M Street NW, NE, SW, and SE.