Mimi Peterson is a longtime Evanston resident and community activist. She is cofounder of To Rescue Evanston Elms (TREE), the organization that spawned preservation of the city�s h...view moreMimi Peterson is a longtime Evanston resident and community activist. She is cofounder of To Rescue Evanston Elms (TREE), the organization that spawned preservation of the city�s historic elm population. Peterson creates a visual essay using nearly 200 vintage postcards to share a unique snapshot of Evanston in the early 1900s.view less