Episode Source Material: 

• Gotham state of mind: what do comics tell us about cities?
• Why Superhero Comics Are Obsessed With Cities
• DC Finally Confirms Metropolis is Located in New York
• CLE Myths: Ohio Bell Building Inspired Superman
• The Architecture of Superman: A Brief History of The Daily Planet
• Daily Star - Supermanica
• Daily Star (DC Comics)
• The Daily Planet in Film and Television | Arts & Culture
• Architectural Critic Will Morgan: Superman Building
• Industrial National Bank Building
• Industrial National Bank Building
• Industrial Trust Building, Providence RI
• PHOTOS: Inside Providence's Superman Building
• Crumbling face of an icon: Can 'Superman' be saved?
• Providence Magazine | Industrial Trust
• Providence's Most Iconic Skyscraper Needs a Superhero
• Adaptive Reuse, Innovation, and Saving Superman — The Providence Foundation
• Art Deco architecture of New York City
• The Beauty and Backstory Behind Art Deco Design
• Peregrine falcon - Wikipedia
• The Falcon Eye | peregrine brown falcons