Related Clues:

• A letter is all the thanks you get
• Letter from the reserve
• Letter that he takes to heart
• The volunteers have a Greek character
• The child's thank-you letter
• Volunteers' angular symbol?
• He's in race with a foreign character
• Article accompanying thank you letter from Corfu
• Article on origins of troubled adolescent character
• Eighth letter of Greek alphabet
• It's dropped by Cockneys
• Greek letter used in trigonometry
• Eighth letter of the English alphabet
• It follows two things that rhyme with it
• Letters from front he takes first to Thermopylae?