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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.

In this official collection, you will find several published bound volumes of the United States Statutes at Large. These volumes contain the evidence 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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Vol 54 No 1 Spring 2024; Parameters
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Vol 54 No 1 Spring 2024; Parameters

Vol 54 No 1 Spring 2024; Parameters

Vol 586 Pt 1; Official Report Of The U.s. Supreme Court Preliminary Reports 2018
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Vol 586 Pt 1; Official Report Of The U.s. Supreme Court Preliminary Reports 2018

Vol 586 Pt 1; Official Report Of The U.s. Supreme Court Preliminary Reports 2018

Vol 39 Issue 2; Federal Communications Commission Record
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Vol 39 Issue 2; Federal Communications Commission Record

Vol 39 Issue 2; Federal Communications Commission Record

Vol 76 No 5 Sept-oct 2024; Citizen Airman.
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Vol 76 No 5 Sept-oct 2024; Citizen Airman.

Vol 76 No 5 Sept-oct 2024; Citizen Airman.

Vol 89 No 199 10/15/24; Federal Register Complete
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Vol 89 No 199 10/15/24; Federal Register Complete

Vol 89 No 199 10/15/24; Federal Register Complete

Vol 89 No 207 10/25/24; Federal Register Complete
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Vol 89 No 207 10/25/24; Federal Register Complete

Vol 89 No 207 10/25/24; Federal Register Complete

Vol 89 No 200 10/16/24; Federal Register Complete
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Vol 89 No 200 10/16/24; Federal Register Complete

Vol 89 No 200 10/16/24; Federal Register Complete

Vol 89 No 201 10/17/24; Federal Register Complete
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Vol 89 No 201 10/17/24; Federal Register Complete

Vol 89 No 201 10/17/24; Federal Register Complete

Vol 89 No 202 10/18/24; Federal Register Complete
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Vol 89 No 202 10/18/24; Federal Register Complete

Vol 89 No 202 10/18/24; Federal Register Complete

Vol 89 No 203 10/21/24; Federal Register Complete
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Vol 89 No 203 10/21/24; Federal Register Complete

Vol 89 No 203 10/21/24; Federal Register Complete

Vol 89 No 204 10/22/24; Federal Register Complete
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Vol 89 No 204 10/22/24; Federal Register Complete

Vol 89 No 204 10/22/24; Federal Register Complete

Vol 89 No 205 10/23/24; Federal Register Complete
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Vol 89 No 205 10/23/24; Federal Register Complete

Vol 89 No 205 10/23/24; Federal Register Complete

Index Vol89 No1-189 Jan-sept24; Federal Register Complete
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Index Vol89 No1-189 Jan-sept24; Federal Register Complete

Index Vol89 No1-189 Jan-sept24; Federal Register Complete

Vol 89 No 206 10/24/24; Federal Register Complete
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Vol 89 No 206 10/24/24; Federal Register Complete

Vol 89 No 206 10/24/24; Federal Register Complete

Congressional Pictorial Directory, 118th Congress (paperbound)
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Congressional Pictorial Directory, 118th Congress (Paperbound)

Congressional Pictorial Directory, 118th Congress (paperbound)

2025 Nasa Science Calendar
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2025 NASA Science Calendar

2025 Nasa Science Calendar

2025 Ciencia De La Nasa
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2025 Ciencia De La NASA

2025 Ciencia De La Nasa

Congressional Record, Volume 162, Part 14, Daily Digest of the 114th Congress, Second Edition
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Congressional Record, Volume 162, Part 14, Daily Digest of the 114th Congress, Second Edition

Congressional Record, Volume 162, Part 14, Daily Digest of the 114th Congress, Second Edition

Astronomical Phenomena For The Year 2025
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Astronomical Phenomena For The Year 2025

Astronomical Phenomena For The Year 2025

Cfr Title 40 Pts 100-135      ; Code Of Federal Regulations (2024)
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Cfr Title 40 Pts 100-135 ; Code Of Federal Regulations (2024)

Cfr Title 40 Pts 100-135 ; Code Of Federal Regulations (2024)

Cfr Title 40 Pts 425-699      ; Code Of Federal Regulations (2024)
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Cfr Title 40 Pts 425-699 ; Code Of Federal Regulations (2024)

Cfr Title 40 Pts 425-699 ; Code Of Federal Regulations (2024)

Cfr Title 41 Chap. 102-200    ; Code Of Federal Regulations (2024)
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Cfr Title 41 Chap. 102-200 ; Code Of Federal Regulations (2024)

Cfr Title 41 Chap. 102-200 ; Code Of Federal Regulations (2024)

Cfr Title 40 Pts 136-149      ; Code Of Federal Regulations (2024)
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Cfr Title 40 Pts 136-149 ; Code Of Federal Regulations (2024)

Cfr Title 40 Pts 136-149 ; Code Of Federal Regulations (2024)

Cfr Title 40 Pts 700-724      ; Code Of Federal Regulations (2024)
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Cfr Title 40 Pts 700-724 ; Code Of Federal Regulations (2024)

Cfr Title 40 Pts 700-724 ; Code Of Federal Regulations (2024)

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