Within this class are volumes and files that contain basic information about established Post Office staff and about the principal Post Office branches in England, Wales, Scotland and Ireland. This class also contains details of Post Office establishments abroad, packet boat services, deceased officers, vacancies and committee reports regarding the Post Office Establishment, amongst much else. There are 24 volumes (POST 59/1-24) covering the period 1691-1798, but the majority of the material consists of lists of salaried officers at various British Establishments for the nineteenth and twentieth centuries.
The class is divided into eight Sub-series, a few of which should be mentioned at the outset. Sub-series 1 is the largest of these and contains the main Establishment books and lists of officers from 1691-1983, published annually from the late eighteenth century (bound copies for this series for the period 1869-1980 can be found in the BPMA search room). Sub-series 3 contains the Establishment books for provincial postal regions across Britain and so is naturally considerable in size, although the period covered for these books tends to be late nineteenth and early twentieth century only. By contrast, Sub-series 4 and 5 contain major and minor Establishment books for the London Postal Region, spanning nearly a 200-year period from 1800. The only series that does not contain lists of basic information (which is the essence of most of the Establishment books) is Sub-series 6, which contains 20 papers and committee reports for the period 1793-1923 that describe changes that have occurred and have been proposed to the Establishment system; a useful starting point for understanding the organisational development of the Establishment structure.
The sort of information included has changed over this 300-year period, but a large proportion of the information found in any particular Establishment book is likely to include an employee's name, their department or location, date of appointment, and yearly salary (or weekly wage). Similarly, the type of employee that has been included in the yearly establishment books has changed over time (and some consideration of the difference between 'established' and 'unestablished' staff will follow), but as a rule of thumb, in the main Establishment books that were published annually (which can be found in Sub-Series 1), it is staff who have been occupied in more senior positions within the Post Office hierarchy who are likely to be found. As a consequence, most of the yearly establishment books within this class will only ever list by name a modest proportion of the entire Post Office workforce for any given year. (It may be helpful for prospective researchers to note that the best starting point in searching for records relating to 'rank and file' employees are the appointments indexes and pensions indexes. A guide to these sources can be downloaded from the BPMA website and a printed version can be found in the BPMA search room, entitled 'Guide to Family History Research'.) POST 59/ 26, 28, 32, 33, 34, 37, 39, 40, 42 and 91 include brief summaries of duties performed by officers. POST 59/ 7, 11, 18 and 20 give complements of Packet Boats.
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