At the time of the Center for American Women and Politics’ founding, there were so few women in politics that some male colleagues wondered aloud what the organization would even study.

Five decades later, in a year marked by critical milestones and mixed outcomes for women’s rights and representation, the Center for American Women and Politics (CAWP) at Rutgers Eagleton Institute of Politics is celebrating its anniversary as the original and preeminent source for data, research and resources regarding women in American politics and public life. Ms. spoke recently with Debbie Walsh, CAWP’s director for the last two decades, about the significance of that half-century mark.