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The United States Naval Observatory performs an essential scientific role for the United States, the Navy, and the Department of Defense. Its mission includes determining the positions and motions of the Earth, Sun, Moon, planets, stars and other celestial objects; providing astronomical data; determining precise time; measuring the Earth's rotation; and maintaining the Master Clock for the United States. Observatory astronomers formulate the theories and conduct the relevant research necessary to improve these mission goals. This astronomical and timing data, essential for accurate navigation and the support of communications on Earth and in Space, is vital to the Navy and Department of Defense. It is also used extensively by other agencies of the government, industry and the public at large.

The Observatory consists of four Scientific Departments: Astrometry, Astronomical Applications, Earth Orientation, and Time Service. Each Department is responsible for specific products and services tailored to their end-users within both the DoD and civilian worlds.

The Naval Observatory's Nautical Almanac Office computes and prepares the vital annual U.S. navigational publications, the Air Almanac and the Nautical Almanac. In addition, they carry on the essential research work of deriving improved values of the fundamental astronomical elements and embodying them in new tables of the celestial motions, publishing the Astronomical Phenomena and the Astronomical Almanac. These publications are produced in cooperation with Her Majesty's Nautical Almanac Office, United Kingdom Hydrographic Office.

To learn more about the U.S. Naval Observatory, visit their website.

The bound volumes of the United States Reports contain the fourth and final generation of the Supreme Court's opinions.

Caution: Only the printed bound volumes of the United States Reports contain the final, official opinions of the Supreme Court of the United States. In case of discrepancies between a bound volume and any other version of the same materials, whether print or electronic, official or unofficial--the printed bound volume controls in a court of law.

Are you looking for information about the United States Statutes at Large?  

In this official collection, you will find several published bound volumes of the United States Statutes at Large.  These volumes contain the evidenec of law enacted by the specific session of the U.S. Congress.  Included are full-text of public laws, plus congressional resolutions, and presidential proclamations within each Congressional session stated.   Each volume also contains a broad array of topics as it applies to the specific Congressional member terms and official legislation.  These volumes serve as official legal references of the U.S. Congress.

 

Explore these Government publications highlighting U.S. and military history. Military topics cover major wars and battles, as well as the history on all branches of the military. For anyone interested in America’s history, key publications cover information on American democracy, presidents, presidential elections, and other important topics.

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Columbus: Voyages to America, 1492-1504 (Poster)
Title:
Columbus: Voyages to America, 1492-1504 (Poster)

Columbus: Voyages to America, 1492-1504 (Poster)

Civil War at a Glance (Package of 100)
Title:
Civil War at a Glance (Package of 100)

Civil War at a Glance (Package of 100)

Battle of Kings Mountain 1780, With Fire and Sword
Title:
Battle of Kings Mountain 1780, With Fire and Sword

Battle of Kings Mountain 1780, With Fire and Sword

Senate, 1789-1989, V. 2: Addresses on the History of the United States Senate
Title:
Senate, 1789-1989, V. 2: Addresses on the History of the United States Senate

Senate, 1789-1989, V. 2: Addresses on the History of the United States Senate

Handbook of North American Indians, V.  7, Northwest Coast
Title:
Handbook of North American Indians, V. 7, Northwest Coast

Handbook of North American Indians, V. 7, Northwest Coast

Yosemite: A Guide to Yosemite National Park
Title:
Yosemite: A Guide to Yosemite National Park

Yosemite: A Guide to Yosemite National Park

Manual of Regulations and Procedures for Federal Radio Frequency Management, 2013
Title:
Manual of Regulations and Procedures for Federal Radio Frequency Management, 2013

Manual of Regulations and Procedures for Federal Radio Frequency Management, 2013

Handbook of North American Indians, V.  4: History of Indian-White Relations
Title:
Handbook of North American Indians, V. 4: History of Indian-White Relations

Handbook of North American Indians, V. 4: History of Indian-White Relations

Warrior Citizen: The Official Magazine of the U.S. Army Reserve
Title:
Warrior Citizen: The Official Magazine of the U.S. Army Reserve

Warrior Citizen: The Official Magazine of the U.S. Army Reserve

Yosemite National Park (Poster)
Title:
Yosemite National Park (Poster)

Yosemite National Park (Poster)

Agate Fossil Beds: Agate Fossil Beds National Monument, Nebraska
Title:
Agate Fossil Beds: Agate Fossil Beds National Monument, Nebraska

Agate Fossil Beds: Agate Fossil Beds National Monument, Nebraska

Current Population Reports: Series P-70, Household Economic Studies
Title:
Current Population Reports: Series P-70, Household Economic Studies

Current Population Reports: Series P-70, Household Economic Studies

Special Warfare: The Professional Bulletin of the John F. Kennedy Special Warfare Center and School
Title:
Special Warfare: The Professional Bulletin of the John F. Kennedy Special Warfare Center and School

Special Warfare: The Professional Bulletin of the John F. Kennedy Special Warfare Center and School

Everglades Wildguide: The Natural History of Everglades National Park, Florida
Title:
Everglades Wildguide: The Natural History of Everglades National Park, Florida

Everglades Wildguide: The Natural History of Everglades National Park, Florida

Army AL&T: Professional Publication of the AL&T Community
Title:
Army AL&T: Professional Publication of the AL&T Community

Army AL&T: Professional Publication of the AL&T Community

Federal Register Complete (Complete Paper Subscription Service, With Indexes)
Title:
Federal Register Complete (Complete Paper Subscription Service, With Indexes)

Federal Register Complete (Complete Paper Subscription Service, With Indexes)

Code of Federal Regulations, LSA, List of CFR Sections Affected
Title:
Code of Federal Regulations, LSA, List of CFR Sections Affected

Code of Federal Regulations, LSA, List of CFR Sections Affected

Federal Register Index
Title:
Federal Register Index

Federal Register Index

FCC Record
Title:
FCC Record

FCC Record

Handbook of North American Indians, V. 11, Great Basin
Title:
Handbook of North American Indians, V. 11, Great Basin

Handbook of North American Indians, V. 11, Great Basin

Military Police: The Professional Bulletin
Title:
Military Police: The Professional Bulletin

Military Police: The Professional Bulletin

United States Army in World War 2, Technical Services, The Corps of Engineers: The War Against Germany
Title:
United States Army in World War 2, Technical Services, The Corps of Engineers: The War Against Germany

United States Army in World War 2, Technical Services, The Corps of Engineers: The War Against Germany

Science of Fingerprints: Classification and Uses
Title:
Science of Fingerprints: Classification and Uses

Science of Fingerprints: Classification and Uses

Hopewell Furnace: A Guide to Hopewell Furnace National Historic Site, Pennsylvania
Title:
Hopewell Furnace: A Guide to Hopewell Furnace National Historic Site, Pennsylvania

Hopewell Furnace: A Guide to Hopewell Furnace National Historic Site, Pennsylvania

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