National Archives at Philadelphia
Mailing Address
900 Market Street
...
Web: www.archives.gov/midatlantic/public
Finding Aids: www.archives.gov/midatlantic/public/finding-aids.html. Using the Advanced Search option, accessible from the ARC home-page (www.archives.gov/research/arc), you can find series-level descriptions of Maryland-related records in this region's holdings.
Access to Collections: Original records available by appointment; we need at least 3 days to retrieve some records stored off-site.
Hours of Service
...