Related Clues:

• Contribute
• Cardinal's insignia
• Fraternity letter
• .001 inch
• T'ai ___ ch'uan
• Letters on a Cardinal's cap
• Fraction of an inch
• Greek letter
• Letter before psi
• 1917 revolutionaries
• With 58-Down, a religious monogram
• Sorority letter
• Sigma follower
• Minimal measure
• This puzzle's theme