The Early Modern London Theatres (EMLoT) database demonstrates how information produced at the time of the early London theatres was transmitted in later years. Specifically, it tracks what direct use has been made, over the last four centuries, of pre-1642 documents related to professional performance in purpose-built theatres and other permanent structures in the London area. It is not a comprehensive collection of those pre-1642 documents; rather, it charts the copies (or ‘transcriptions’) which were subsequently made of them. It reveals who used them, and when, and where evidence appears of that use, providing access to the varied and long ‘after-life’ of those documents.