Hudnall, E., (1947, April 5). [Letter to Dr. B. B. Dougherty].
     Unpublished manuscript, University Archives, Appalachian
     State University, Boone, NC .

• Author's name
• Recipient's name
• Date written
• Name of collection
• Name of depository
• Depository's location

Note: Spacing is important. For example, compare Chicago, MLA, and Turabian. Consult individual guides for exact spacing.

Hudnall, Eva. April 5, 1947. Dr. B. B. Dougherty Papers,
     Box 12, Folder 124. Appalachian State University
     Archives, Boone.

Letters are not mentioned in the bibliography if they are clear in the text. In a bibliography, the main elements are usually the collection in which the item can be found, the author(s) of the item, and the depository for the collection. See page 711 in Chicago Manual of Style, 15th edition.

Trivette, N.  (Speaker). (1997, October). Interview with
     Dr. Ruth Douglas Currie, University Archivist
     [Cassette Recording]. Boone, NC: Appalachian
      State University.

• Interviewee's name
• Interviewer's name
• Date conducted
• Name of collection
• Name of depository
• Depository's location

Note: Spacing is important. For example, compare Chicago, MLA, and Turabian. Consult individual guides for exact spacing.

Chestnutt, C. W. (1899) Fredrick Douglass. Retrieved
     December 13, 2005, from the University Library, University
     of North Carolina at Chapel Hill, Documenting the American
     South Web site: http://docsouth.unc.edu/neh/chesnutt/menu.html

SEE ALSO: APA STYLE Guide for Electronic References
http://www.apastyle.org/elecref.html

Important Elements:

• Author
• Title of work (if titled)
• Publication information (if previously published in print)
• Project name
• Publication information for the project
• Date of access
• Address of the site

Note: Spacing is important. For example, compare Chicago, MLA, and Turabian. Consult individual guides for exact spacing.

Chestnutt, Charles Wadell. Fredrick Douglass. Boston: Small,
      Maynard, 1899. Documenting the American South.
     <http://docsouth.unc.edu/neh/chesnutt/menu.html>.

In a bibliography, the main elements are usually the collection in which the item can be found, the author(s) of the item, and the depository for the collection. See pages 710 and 714 in Chicago Manual of Style, 15th edition.