How to cite unpublished letters from archives in Chicago 16th style?

Hi

I’m having difficulty referencing unpublished archive letters in Chicago Style

Currently I’ve chosen ‘manuscript’ style but its muddling the details.

My output needs to follow this format

Allan Holland to Stella Holland, 9 August 1914, MS 6265/1/21, Patrick O’Farrell Papers, National Library of Australia, Canberra.

EndNote has two Chicago 16th output style files: Author-Date, and Footnote. Which output style file are you using? Neither Endnote style file includes a bibliography or footnote template for the “Manuscript” reference type so one needs to be constructed in order to display the reference information.