Archives are a rich trove of sources for historians. Access requirements vary from archive to archive, but it is always wise to contact the archive in advance of your visit to learn about what you need (forms of identification, letters of reference, etc.) and what you can bring into the archive (digital camera, laptop, etc.).
Thousands of videos for the study of American history, with contemporaneous video footage from the 1890s to the 1980s as well as historical documentaries from leading video producers.