Related Clues:

• Diplomacy, e.g.
• Thomson and Varley milieu
• Van Gogh's forte
• Lichtenstein's field
• Museum holdings
• It's appreciated by 31-Across
• Word with ''op'' or ''pop''
• Certain collectibles
• Act of creation
• ''Our Father, who ___ in heaven . . .''
• Sculptures and installations, e.g.
• It may be fine
• Certain hangings
• Antique artifact
• Etchings and such