How many movies did John Wayne make with his son Michael?

John Wayne and his son Michael Wayne worked together on three films:

* The Green Berets (1968): Michael Wayne was a producer on the film, while John Wayne starred in the lead role.

* Big Jake (1971): Michael Wayne produced the film, with John Wayne playing the lead role.

* The Shootist (1976): This was John Wayne's last film, with Michael Wayne serving as a producer.