During an era when many women concentrated on hearth and home, thousands of women quietly and without pay served in law enforcement. They organized, administered, presented reports to county commissioners, prepared for inspections, comforted victims, disciplined unruly inmates, fought with escapees, rode shotgun with their husbands as backup, and raised children, tended gardens, and kept house. They risked their lives every day and some paid the ultimate price. This is their story.

The office of county sheriff has existed in America since 1634. Between 1800 and 1960, families...