The Doomsday Manuscript was a report of an archaeological dig on Kasagrad, to a place where according to legend if opened would destroy the world. After Goram and Lacey, closed up the tomb, they split the record in half so that no-one could find the tomb. Bernice Summerfield was employed to find the pieces of the manuscript and find the tomb. (PROSE: The Doomsday Manuscript)

During a meeting between the Master, the Fourth Doctor, when speculating about the Master's future plans, asked if he plans on ripping out the pages from the Doomsday Book. (AUDIO: Death Match)

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