Final answer:
Archival data are sometimes stored by institutions such as museums and include a range of resources like manuscripts and photographs, requiring proper preservation and access policies to ensure their longevity and usefulness for research.
Step-by-step explanation:
Archival data can be stored and collected by a variety of organizations, not just governmental agencies. They sometimes are maintained by institutions such as museums, universities, and historical societies. These archives can contain a wealth of resources, including manuscripts, rare books, photographs, and other artifacts. Special care is taken to preserve these materials, which can range from requiring researchers to wear gloves while handling them, to imposing strict policies on access and reproduction. Many libraries also have special collections that serve as archives, housing documents and materials that provide valuable insights into history and culture. Archives are indispensable for researchers in fields such as anthropology, where analyzing historical collections can offer new understanding into human cultures and societies.