The Library of Congress, established in 1800, serves as the research arm of Congress and is widely recognized as the national library of the United States. Its Collections Policy Statement provides the framework for the development and management of the Library's vast holdings, which currently include over 170 million items in various formats and languages. This document outlines the principles, criteria, and guidelines that govern the acquisition, preservation, and accessibility of materials that constitute our national heritage.
The Library of Congress aims to build a comprehensive collection that supports the Congress in fulfilling its constitutional responsibilities and serves the needs of researchers, scholars, and lifelong learners. The collections reflect America's history, creativity, and intellectual achievements, while also documenting global cultures and knowledge.
The Collections Policy Statement embodies this mission by ensuring that the Library acquires, preserves, and provides access to materials of enduring value across all subject areas and formats, while maintaining appropriate scope and balance within budget constraints.
The Library seeks comprehensive coverage of subjects related to American history, culture, government, and society. Additionally, it maintains representative collections from countries and cultures worldwide, with particular depth in areas where Congress has legislative or policy interests.
Collecting extends across traditional print materials, manuscripts, maps, visual resources, sound recordings, moving images, born-digital content, and emerging formats. The Library recognizes the importance of capturing content in the formats in which it is created while maintaining preservation copies when possible.
While the Library prioritizes materials created in or related to the United States, it maintains significant collections from global regions, with particular emphasis on areas of historical or contemporary significance to U.S. interests.
Priority consideration is given to materials that offer unique scholarly value, document significant historical events or ideas, represent high-quality creative work, or fill gaps in existing collections.
Items that document important aspects of American and world history, culture, science, technology, politics, or society are actively sought regardless of potential contemporary popularity.
Primary source materials, unpublished works, original creative content, and items that add unique perspectives to the holdings receive strong consideration for acquisition.
The Library strives to ensure collections reflect the diversity of American society and the wide range of human experiences, including materials from underrepresented communities and perspectives.
The Library maintains numerous special collections dedicated to specific subjects, formats, or donors, including but not limited to:
Recognizing the growing importance of digital content, the Library has developed comprehensive strategies for acquiring, preserving, and providing access to born-digital and digitized materials. This includes:
The Library archives selected websites and online publications, particularly those related to U.S. government operations, elections, and significant national events.
Sophisticated technical infrastructure and procedures ensure that digital materials remain authentic, accessible, and usable over time despite changing technologies.
Materials from the physical collections are systematically digitized according to priorities that consider research value, preservation needs, and copyright status.
The Library subscribes to and licenses electronic databases, journals, and other digital resources that complement the physical collections.
The Library acquires materials through various mechanisms:
The Library employs comprehensive strategies to ensure the long-term preservation of its collections:
Temperature, humidity, light, and air quality are carefully monitored and maintained in storage and exhibition spaces to slow deterioration.
Professional conservators employ both traditional techniques and innovative technologies to stabilize, repair, and restore damaged materials.
Materials are reproduced in more stable or accessible formats when original items are too fragile for handling or when access demand warrants creation of reference copies.
Comprehensive plans and procedures minimize the risk of damage from natural disasters, building failures, or other emergencies.
While the Library serves the Congress as its primary constituency, it also provides access to its collections for researchers, scholars, and the general public:
Reading rooms provide access to materials not readily available elsewhere, with appropriate registration and handling procedures to protect collections.
Millions of items are available through the Library's website and digital collections, with physical collections increasingly discoverable online.
Specialist librarians provide assistance in navigating collections and identifying relevant materials.
Access is provided in accordance with copyright law and other applicable restrictions, with the Library neither granting nor denying permission to use copyrighted materials.
The Library of Congress Collections Policy Statement represents a living document that evolves to address changing technologies, research needs, and budgetary realities while maintaining core principles. It guides decisions that ensure the Library continues to fulfill its vital role as the custodian of America's cultural and intellectual heritage and a beacon of knowledge for the world.
