Possible Clues:

• What inspired pin-up to enter love feast?
• Silver for a boy, endless fount of inspiration
• Open wide to take small drink from fount of inspiration
• Silver article on pipe broken in spring
• Motion appearing right away to get poetic inspiration
• Muses' spring might supply pep again . . .
• Fountain on Mount Helicon that was sacred to the Muses
• Likeness that's a cover for small magazine
• These associated with Twain in his book
• Take a bite in a love-feast as a fount of inspiration