Access to Archival Databases in the National Archives and Records Association has records for almost anything available online!
http://aad.archives.gov/aad/
Anthropological Documents
Ship manifests
Birth and Death Dates for Ancestors
Government Spending
Census Information
Photographs
National Parks


Access to over 85 million historic electronic records created by more than 30 agencies of the U.S. federal government and from collections of donated historical materials.

Both free-text and fielded searching options.

The ability to retrieve, print, and download records with the specific information that you seek.

Information to help you find and understand the records.This is just a fantastic database for locating an unbelievable amount of information!