Possible Clues:

• Piles showered on Greek character
• Refusal to receive Liberal is picked up in letter
• Rambling spiel working in foreign letter
• Greek letter varies in slope
• Noel failing to receive one Greek letter or another
• Space to include afterthought on one line over letter
• Plies drunk working for Greek character
• Letter, strangely, is open about student
• Greek character's record still regularly being played
• Start of Euripides' signature