Book excerpt: While H. V. Redfield was not the first person to note the elevated amount of interpersonal violence in Southern and border states, Homicide, North and South was the first book to investigate regional differences in murder systematically, by discussing counts and rates from different states and the two major regions side by side. It appears to be the first book to draw on newspaper clippings to document homicide rates quantitatively, and it certainly was the first work to do so in a systematic, comparative fashion. Redfield was the first person to use multiple data sources, both news clippings and (from those states that collected and published them) mortality or criminal statistics. Where possible, he compared such records with one another to establish their joint reliability.