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

Military Police: The Professional Bulletin

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

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

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

Morristown: A History and Guide, Morristown National Historical Park, New Jersey
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Morristown: A History and Guide, Morristown National Historical Park, New Jersey

Morristown: A History and Guide, Morristown National Historical Park, New Jersey

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

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

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

Science of Fingerprints: Classification and Uses

Handbook of North American Indians, V.  5, Arctic
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Handbook of North American Indians, V. 5, Arctic

Handbook of North American Indians, V. 5, Arctic

Air Traffic Control Handbook, Order 7110.65V
Title:
Air Traffic Control Handbook, Order 7110.65Y

Air Traffic Control Handbook, Order 7110.65V

Customs and Border Protection Regulations of the United States, 2020 Revised Edition
Title:
Customs and Border Protection Regulations of the United States, 2021 Revised Edition

Customs and Border Protection Regulations of the United States, 2020 Revised Edition

Parameters: United States Army War College Quarterly
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Parameters: United States Army War College Quarterly

Parameters: United States Army War College Quarterly

Handbook of North American Indians: V. 10, Southwest
Title:
Handbook of North American Indians: V. 10, Southwest

Handbook of North American Indians: V. 10, Southwest

Exploring the American West, 1803-1879
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Exploring the American West, 1803-1879

Exploring the American West, 1803-1879

Final Collapse
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Final Collapse

Final Collapse

Gettysburg National Military Park
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Gettysburg National Military Park

Gettysburg National Military Park

Military Advisors in Korea: KMAG in Peace and War (Paperback)
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Military Advisors in Korea: KMAG in Peace and War (Paperback)

Military Advisors in Korea: KMAG in Peace and War (Paperback)

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