The Third Doctor was portrayed by actor Jon Pertwee from 1970-1974.

Season Seven (1970)

• Spearhead from Space
• Doctor Who and the Silurians
• The Ambassadors of Death
• Inferno

Season Eight (1971)

• Terror of the Autons
• The Mind of Evil
• The Claws of Axos
• Colony In Space
• The Daemons

Season Nine (1972)

• Day of the Daleks
• The Curse of Peladon
• The Sea Devils
• The Mutants
• The Time Monster

Season Ten (1972-1973)

• The Three Doctors
• Carnival of Monsters
• Frontier In Space
• Planet of the Daleks
• The Green Death

Season Eleven (1973-1974)

• The Time Warrior
• Invasion of the Dinosaurs
• Death to the Daleks
• The Monster of Peladon
• Planet of the Spiders

Source of inspiration and material: Wikipedia & BBC