Opening with Barbara Kopple’s groundbreaking 1976 film, Harlan County, U.S.A., this chapter provides historical highlights to reveal how shifting cultural backdrops provided the fertile ground for documentary filmmakers, philanthropists, and new organizations to shape the practices, forms, values, marketplace, and audiences for present-day documentary storytelling and the ecology of professionals who enable and produce them. The bedrock values and practices of the contemporary social-issue documentary tradition evolved through individual organizations and people who laid the groundwork during the analog age, spurred by tumultuous demands for equity and a climate of social consciousness. Chapter 2 provides historical highlights organized by four core themes: enabling infrastructure developed out of movement culture and tension, civic motivation in documentary practice, representation of diverse voices and experiences, and shifting media platforms and technology that have aided documentary’s marketplace expansion. As other chapters illustrate, these themes underlie present-day documentary practice and public engagement.