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The Doctor's Timeline |
The First Doctor
Season 1
| Title | Code | Companions | Travel Log | Notes |
| An Unearthly Child | A | Susan Foreman; Ian Chesterton; Barbara Wright | Earth (November 1963; 100,000 BC) | - |
| The Daleks | B | Susan; Ian; Barbara | Skaro (300 AD) | Takes place directly after An Unearthly Child |
| The Edge of Destruction | C | Susan; Ian; Barbara | The Doctor's TARDIS | Takes place directly after The Daleks |
| Marco Polo | D | Susan; Ian; Barbara | China, Earth (1289) | Takes place directly after The Edge of Destruction |
| The Sorcerer's Apprentice | MA 12 | Susan; Ian; Barbara | Elbyon, Avalon (c.3025) | Takes place directly after Marco Polo |
| The Keys of Marinus | E | Susan; Ian; Barbara | Marinus (1964) | Takes place after Marco Polo |
| The Aztecs | F | Susan; Ian; Barbara | Mexico, Earth (c.1450) | - |
| The Sensorites | G | Susan; Ian; Barbara | Sensesphere (28th century) | - |
| The Reign of Terror | H | Susan; Ian; Barbara | Paris, France, Earth (July 1794) | - |
Season 1a
| Title | Code | Companions | Travel Log | Notes |
| The Witch Hunters | BBCP 09 | Susan; Ian; Barbara | Salem, Massachusetts, Earth (January-July 1692); Danver, Massachusetts, Earth (1998); London, England, Earth (November 9th 1954) | Between "The Reign of Terror" and "Planet of Giants" |