Please be aware that all mail (U.S. Postal Service and private carrier) sent to the Library of Congress is being screened off-site prior to arrival on Capitol Hill. This process can add at least 3 to 5 days to the delivery time for all mail sent to the Library of Congress.
Prior to sending items other than regular paper documents to the Library of Congress, it is best to check on procedures with the receiving office. In general, it is best to package the following items in boxes rather than envelopes for mailing to the Library of Congress:
- electronic media such as audiocassettes, videocassettes, CDs, and DVDs
- microform
- photographs
- slick advertisements, color photocopies, and other print items that are rubber- and vegetable-based
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