This series contains registers of entries of copies, used to establish publishers', booksellers' and eventually authors' copyright until the introduction of automatic copyright in 1912. As there was widespread disregard of the procedure throughout the period of required registration, the registers do not contain record of all qualifying works for the period concerned.
All entries are manuscript, dated and in chronological order; the formula of entry always includes the name of the registrant, title of the work and amount paid for entry (to 1786). Names of authors and works referred to in file-level descriptions have been standardised; authors' names are in square brackets when they do not appear in the register.