Recently, I have being carrying out some research on the ‘Colonial Office Blue Books of Statistics’. 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. The name Blue Book is the Colonial Office term used for these statistics. They provided information from colonial governments for more than a century, on all aspects of the economy and administration of the territories. The last books were printed just after the Second World War, as late as 1949.