The bland official title 'Administration reports' conceals the true value of the series, which is a mine of information on the development of the modern Gulf. British officials appointed to the area in the 19th century were often scholars of high repute and many of their appended monographs have since become a vital source for historians of the region. They range from S. B. Miles' biographical sketches of the rulers of Muscat and E. C. Ross' Memoir on Nejd to notes on the pearl industry, date cultivation and fisheries which contain information still sought after by regional planners. As British involvement in the Arab Gulf states increased so did the range of material included in the reports. Oil exploration is chronicled from the early years of the twentieth century as are the subsequent social and economic changes brought about by its discovery. Education, particularly in Bahrain, is regularly reported on as well as developments in health and medical care.