A Journal of Impossible Things (Human Nature)

The Journal of Impossible Things was a journal kept by John Smith of his strange dreams - actually memories from his life as the Doctor's tenth incarnation, with some memories of previous incarnations' appearances. All but Martha Jones believed these to be products of John Smith's imagination.

Inside it contained images of the Doctor's TARDIS, his sonic screwdriver, K-9, Rose Tyler, Autons, Clockwork Droids, a squad of Cybermen, a Dalek, the Moxx of Balhoon, a Raxacoricofallapatorian and the Empty Child, as well as drawings of his past faces. (DW: Human Nature)