Librarian for American History
Archivist for American Diplomacy
Librarian for Political Science. Global Affairs, and Government Information
Welcome and other guide content
![](<a title="By United States Government (Office of the Director of National Intelligence) [Public domain], via Wikimedia Commons" href="https://commons.wikimedia.org/wiki/File:US_Intelligence_Community_members.gif"><img width="512" alt="US Intelligence Community members" src="https://upload.wikimedia.org/wikipedia/commons/thumb/4/42/US_Intelligence_Community_members.gif/512px-US_Intelligence_Community_members.gif"></a>)
Greetings and welcome to the research guide on National Security, Espionage, and Intelligence. This guide will take you on a journey through sources on:
Government Information (below)
Getting started with government information
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United States Federal Government Information at YaleThis is a research guide that covers extensively how to find and use government information. Included in this guide are general resources, how to find information, and how to cite.
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Sources on Foreign RelationsThis is a research guide that covers extensively how to find foreign relations sources.
Homeland Security Digital Library
The Homeland Security Digital Library (HSDL) consists of documents related to homeland security policy, strategy, and management. Sources include federal, state, and local governments, IGOs, nonprofit and private sector entities, and think tanks and research centers. The public part of the collection includes over 79,000 public domain items; Yale researchers have access to the full collection of 157,000 items.