Archives or Special Collections can provide wonder primary resources to compliment your research. Using them can be a unique experience and in most places is slightly different from doing non-archival research, though much of the procuress are the same. Each archive will unique rules and collection procedures so it is a good idea to be familiar with the archives in general as well as research the rules at the archive that you want to visit.
The UNT Libraries Special Collections department collects and preserves rare and unique materials including rare books, oral histories, university archives, historical manuscripts, maps, microfilm, photographs, art and artifacts. Students, faculty and the public are welcome to access collections and view special exhibits in our Fourth floor Reading Room. They also have Special Collection Librarians that can assist you with using the materials.
The Library at the CUNY Graduate Center (archives, findings aids, using archives and special collections. The following information comes from their guide verbatim.2019) has an excellent guide on
The New York Public Library succinctly defines archives as " ."