Louise Audino Tilly, who died on March 2, 2018, enjoyed a relatively short twenty-five year career as a historian. But Tilly left an enduring imprint through her example and through her scholarship on the history of women and work, on the social and economic circumstances affecting collective action, and on the connections between demographic changes and family life. In more recent decades, several generations of historians have benefitted from the road maps she left pointing the way for emerging work on the connections between micro-level analysis and national and international histories of social change.