Even today, many primary sources are only available in print. Use some of these guides to you locate archives relevant to your topic:
Archive Finder links ArchivesUSA and the National Inventory of Documentary Sources in the UK and Ireland, providing researchers with access to primary source material repositories and microfiche finding aids for thousands of archive and manuscript collections.
Contains all the records cataloged by OCLC member libraries. Offers millions of bibliographic records. Includes records representing 400 languages.