Related Clues:

• One gets no thanks for this small item
• Letter one's written with love and thanks
• I turn to a trifle
• I can still change hint
• Bit, in it, a hole
• One acquiring old books and a letter
• I take round a thank-you letter
• Is it a cover for a love letter?
• What's written up to you in French letter
• Concealing in it a love letter
• A little over a third of letters turned up
• One volunteers to accept nothing but a tiny bit
• Letter to the Corinthians?
• Ten cheers for Greek character
• X appends thank-you letter