Citation of Archival Resources
Archives often have slightly different ways for organizing their holdings, and therefore the citation may change depending on the institution with which you are working and the style of citations you are using (e.g. Chicago, APA, MLA). The following elements should be captured in your citation:
Materials in the public domain are works for which copyright has expired or has been abandoned. They are not protected by copyright law and can be used without permission.
Fair use is a rule that allows, in specific cases, limited use of materials that are copyrighted without first obtaining permission from the copyright holder
Always talk to an archivist about issues of copyright and/or licensing before publishing content that you find in an archives.
It is the responsibility of the researcher to find the copyright holder and obtain the necessary rights before publishing or citing from materials.
Peter Hirtle’s (Cornell University) Copyright Chart -- this chart is widely adopted by librarians and archivists for its thoroughness and applicability