Related Clues:

• Variety
• Type
• See 4-Down
• Like some MOMA art
• Erté's forte
• See 25-Across
• Science fiction, for one
• Retro art style
• Like the Normandie, stylewise
• Highly ornamented style
• Book category
• Sort
• Architectural style
• See 49-Across
• See 2-Down