This series chiefly presents papers and correspondence relating to Nicholson's work at the Ministry of War Transport. There is some earlier material from his brief spell at the Ministry of Information, including a note of an interview with the Foreign Secretary and notes on possible pamphlets. As well as general Ministry of War Transport business, there is significant coverage of the role of the Middle East Supply Centre (MESC), chiefly in the form of correspondence, 1942-1945, between Nicholson and R.G.A. Jackson, the Director-General of the MESC. There are later correspondence and papers concerning Nicholson's assistance with histories of wartime shipping and the MESC. A few papers survive from Nicholson's attendance at the Potsdam Conference, July 1945, and there are some miscellaneous wartime correspondence and papers.