You can just use "document" and add archival information. Archives have all types of documents (letters, emails, images, documents, reports, maps) so it makes more sense to allow archival info across different materials than to just define one "archive document" item type.
Archives have all types of documents (letters, emails, images, documents, reports, maps) so it makes more sense to allow archival info across different materials than to just define one "archive document" item type.