Suburban subdivisions encouraged buyers to live with their “own kind,” constantly sorting people by religion, ethnicity, race, and class. The esteemed architectural critic Lewis Mumford described Levittown as a “one-class community.” In 1959, the bestselling author and journalist Vance Packard summed up the suburban filtration process as “birds-of-a-feather flocking.” As we have so often seen, the importance of animal stock, and of “breed” generally, remained on the tip of the American tongue when idiomatic distinctions of class identity were being made.
