A project manager for Addressing the Unaddressed, an NGO in Kolkata that provides unique postal addresses to people in unplanned settlements using location codes.

An influential American urban planner known for his work on mental mapping, whose concepts are applied by Mask to describe how ancient Romans navigated their city.

A British social reformer responsible for modernizing the UK's postal system by introducing the Penny Post, which led to greater consideration of organized street naming.

The founder of Philadelphia who implemented a grid-iron street pattern, exemplifying early American city planning and the use of numbered streets.

A community activist and founder of Beloved Streets of America, who works to revitalize streets named after Martin Luther King, Jr. into thriving cultural hubs.