Can the Library of Congress authenticate my document?

The Library of Congress does not appraise historical manuscripts, and judgments on the genuineness, authenticity, or value of such documents are reliable only when based on a first-hand examination. You may wish to consult with an appraiser or expert in person for more information about your document.

While the organizations named below do not provide appraisals, each publishes a directory of its member appraisers. The list is provided as a courtesy. The Library of Congress does not endorse or guarantee the work of appraisers.

American Society of Appraisers
P.O. Box 17265
Washington, DC 20041
(703) 478-2228; 800/272-8258

Antiquarian Booksellers' Association of America
20 West 44th Street
New York, NY 10036
(212) 944-8291

International Society of Appraisers
Riverview Plaza Office Park
International Society of Appraisers
1131 SW 7th Street, Suite 105
Renton, WA 98005
(206) 241-0359; Fax: 206/241-0436

Appraisers Association of America
386 Park Avenue South, Suite 2000
New York, NY 10016
(212) 889-5404

Professional Autograph Dealers Association
P.O. Box 1729W 
Murray Hill Station
New York, NY 10016
(888) 338-4338

Last Updated: Jul 02, 2020
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Manuscript Division
Library of Congress
101 Independence Ave. SE
Washington, D.C. 20540-4680