NARA now has searchable databases online for researchers use. Not all, naturally, are there but there is a 'bunch of 'em". I do believe you will want to bookmark this site. Online access to a selection of nearly 50 million historic electronic records created by more than 20 federal agencies on a wide range of topics; the ability to search for records with the specific information that you seek; important contextual information to help you understand the records better, including code lists, explanatory notes from NARA archivists, and for some series or files in AAD, related documents. http://www.archives.gov/aad/