 Complete the following phrase:  The price of the early volumes was set at 21 Shillings 21s and another 21s for accompanying map cases but this was considered too costly for professional officers. In 1923, the price was cut to 12s 6d but this left no surplus for advertising and no incentive for booksellers to display them prominently; publishers also set a maximum number of pages per volume, a constraint that led the Committee for Control in 1924 to advise a price increase to 15s. In March 1933, Edmonds showed copies of French, German and Austrian histories to demonstrate their elaborate and voluminous nature. The comprehensive nature of the project was also determined by fice and proposals made by government departments from 1922 to 1939, for histories beyond the Western Front. In 1931, the War Office asked for a volume on the East African Campaign, because of lessons offered by a campaign in such a climate, at such a distance from Britain. The Treasury refused and suggested that the Colonial Office pay, as it had done for the West African volume. East Africa Part I was eventually published in 1941 with Colonial Office money. At the same meeting, the Foreign Office asked for a volume on the 