|| Before You Ask ||
Services We Provide
- Basic research assistance related to the cartographic collections in the Library of Congress
- Answers to queries requiring resources unique to the Library of Congress
- Response within 5 business days
Services We Cannot Provide
- Extensive research projects in our collections
- Answers for student assignments, contests, puzzles or games
You can also visit the Geography & Map Division Web site.
Ask a Librarian Online
For reference questions, proceed to the online form and get answers via email.
Contact us by Phone or Fax
(202) 202-707-6277
Fax:(202) 707-8531
Written Correspondence *
Geography & Map Division
Library of Congress
101 Independence Avenue, SE
Washington, D.C. 20540-4650
* Please note: information on mail delays
|| Additional Geography & Map Division Resources ||
We suggest that you:
- Consult your local library first
- Read our reference correspondence policy
Many questions can be answered using:
- Library of Congress Online Catalog
- Online Map Collections
- Selected Geography/Map Reference Web Resources
Certain types of questions are better directed elsewhere. Your local library can direct you with books, special online indexes, full text products, pamphlets, and other useful resources:
- Free downloadable public domain map images from the Library of Congress Map Collections
- Aerial photographs, satellite imagery, modern topographic maps, and digital data available from the United States Geological Survey
- Modern Federal, state, and local geographic data
- Historic federal census data and GIS-compatible boundary files for the United States between 1790 and 2000 from the National Historical Geographic Information Systems project
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