El juego más hermoso del mundo (1964)

This medium-length documentary film, which is also slightly advertise-driven, goes through the process of selection and training of young talents at the River Plate Soccer School that was run by Carlos Peucelle, and it also documents the Argentine history of the most popular sport, combining archive footage (including a recorded training of River's "La Máquina" team) with cartoons designed and directed by Oscar Desplats, Carlos Ávila and Oscar Grillo.