Smith-Rosenberg takes an in-depth look at the nature and dynamics of women’s intense and intimate same-sex friendships in 19th century America, as documented in the correspondence from 35 middle-class families dating between the 1760s and 1880s, from a variety of geographic regions, both rural and urban, and belonging to a variety of Protestant denominations. Private correspondence and diaries have the advantage of presenting the best available approximation of unfiltered personal reporting. They were never intended for public consumption and therefore are able to reveal private thoughts.