Please note, the research facility is located at the rear of the main buliding on Pennsylvania Ave

National Archives in Washington, DC
700 Pennsylvania Avenue, NW, Washington, DC 20408
https://www.archives.gov/dc-metro/washington

Plan Your Research Visit
https://www.archives.gov/research/start/plan-visit-0

Plan to arrive early, it may take time to have your documents pulled from the interior vaults.