To refer to a whole collection of manuscripts, use the name of the collection.
You will need:
Format:
Location of collection in archive or repository (Year/s) Name of collection. Catalogue/reference number.
Example:
University Archives, London South Bank University (c.1970-1980s) DS – David Singmaster. Reference number: DS.
In-text citation: (University Archives, c.1970-1980s)
COMING SOON!