During her time as a visiting professor, Keller published her first book,
Beyond the Ruling Class, with
Random House publishing. She re-examined the idea of a small class of elitism and argued that minority elites were responsible for major changes to the social order.
Robert Wuthnow spoke highly of her book saying, "she [Keller] was one of the few people who attempted to look at the history of elites and what function they played in society." In her first few years at Princeton she published her second book
The Urban Neighborhood, which aimed to close the gap that Keller felt existed between sociologists concept of neighborhoods and physical planners definition. After two years at Princeton, Keller became the first female faculty or research member at Princeton to be appointed a
Full professor. She received her letter of promotion on May 5, 1968, although the letterhead started with "Dear Sir." When news broke of her promotion, she was inundated by journalists including one who called her at 4'oclock in the morning. Her advocacy was reflected in her literature such as
Building for Women and
The American Dream of Family. Using the technique of
participant observation, she gathered data on how residents living in
Twin Rivers, New Jersey "first planned unit development" learned to live together. Keller retired from Princeton in 2004 and gained the title of professor emeritus. Keller died on December 9, 2010, after suffering a stroke in Miami. She was survived by her husband Charles Haar and their children. ==References==