This document provides a history of documentaries, beginning with a definition that they are nonfictional films or programs meant to document and inform about reality. It notes that documentaries were originally shot on film but can now be seen across different mediums. The document then discusses early documentary pioneers like Bolesław Matuszewski in the late 1800s and John Grierson in the 1930s, who coined the term "documentary" and emphasized capturing authenticity. Grierson believed the interpretations in documentaries could be more real than fiction and established trends in British and Canadian documentary filmmaking. The document concludes by reviewing documentary trends over time and noting how understanding history can help in creating a successful documentary.