The item descriptions attached, 6CCS/7/01-6CCS/7/79, give a detailed listing of circular letters.
Most of the letters (items 6CCS/7/01-29) are bound in a file of Council of Women Civil Servants (CWCS) correspondence entitled 'BFBPW [British Federation of Business & Professional Women] - General Correspondence including minutes'.
The following exceptions are held in additional files:
6CCS/7/04 is from a file 'BFBPW seeks CWCS as a member'
6CCS/7/07 is from a file 'CWCS Reports for Women at Work'.
6CCS/7/13 is from a file 'CWCS Reports for Women at Work'.
6CCS/7/12 is from a file 'CWCS Representation on BFBPW'.
A couple of items were marked as 'Not available' in the Fawcett Library Catalogue. It has not yet been confirmed if this means these items are missing.