 Each entry in the catalog typically includes the film's title, physical description, production and distribution companies, production and release dates, personal credits, a plot summary, and notes on the film's history.The films are indexed by personal credits, production and distribution companies, year of release, and major and minor plot subjects.To qualify for the "Feature Films" volumes, a film must have been commercially made by an American company, and given a theatrical release in 35 mm or larger gauge to the general public, with a running time of at least 40 minutes.