The Frontier Exploration Society of Mercy Point.
The Frontier Exploration Society was founded in May 1862, shortly after the Great War drew to a close, rendering much of the Old World uninhabitable.
The Towers of Arcana, drawing upon knowledge gained by prominent heroes of the day, discovered the means to travel to several alternate dimensions, each containing its own version of Earth.
When an Earth suitable for human habitation was found, the city of Mercy Point was founded, and a gate between it and the Old World established, that all free men might settle there.
The Frontier Exploration Society of Mercy Point was founded soon after, tasked with the exploration and cataloguing of the regions, peoples, flora and fauna of the New World.