1955 Map of Poston

About this map

The Colorado River serves as the dominant boundary on this mid-century survey, defining the border between California and Arizona and the split between Riverside and Yuma counties. The landscape is characterized by the organized infrastructure of the Indian Reservation, where a geometric grid of roads and canals supports local settlements. The town of Poston and the secondary site of Poston 2 are the primary hubs, with social and logistical life anchored at the Poston School.