Related Clues:

• What's in a name? This, for a start
• *PO
• A letter of introduction
• In India I am it
• First sign, in brief
• First to authorise
• The first Epistle
• Character to give one's name to
• First sign?
• First to show approval thus
• Sign one letter
• Introductory letter
• Byatt's first is a first
• Opening one No Trumps, I almost entirely enthral Institute
• First to subscribe, writing letters