Recently, I haveÂ beingÂ carrying outÂ someÂ research on the âColonial Office Blue Books of Statisticsâ. These began in the early 1820s when the Colonial Office required Governors of British dependencies to send a variety of statistical returns to London on an annual basis. TheÂ name Blue Book is theÂ Colonial Office term usedÂ for these statistics. They provided information from colonial governments for more than a century, on all aspects ofÂ the economy and administration of the territories. The last booksÂ were printed just after the Second World War, as late as 1949.