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Surviving episodes:

Missing episode reconstructions:

Orphan episodes (on the Lost in Time box set):

Multi-Doctor reappearances:

Additionally, every single one of his serials (aside from the multi-Doctor reappearances) have been released in their entirety in audio CD, with narration to fill in the gaps that can't be inferred from the sound alone. Furthermore, all mentioned stories but "The Name of the Doctor" have been novelised by Target Books.