Correspondence and papers on LSA's concerns about a threat to Imperial Preference in the Lend-Lease agreement with the United States, with correspondents including: Sir Herbert Williams to LSA and Anthony Eden [later 1st Lord Avon] on a trade agreement with the United States (2); John Llewellin [President of the Board of Trade]; Montagu Norman, Governor of the Bank of England.

Also includes copies of letters from LSA to correspondents including: Vice-Admiral Ernest Taylor; Sir Andrew Duncan; "Bendor" [2nd Duke of Westminster, earlier Lord Belgrave]; Henry Drummond-Wolff; Sir Herbert Williams; 1st Lord Bennett; Robert Menzies; 1st Lord Swinton [earlier Philip Cunliffe-Lister and Philip Lloyd-Greame]; 1st Lord Hankey; Harold Macmillan [later 1st Lord Stockton]; 1st Lord Greenwood; [William] Stephen King-Hall.

Also includes: text and summary of an address by LSA to the International Parliamentary Conference on the Most Favoured Nation clause; Federation of British Industries pamphlets on commercial policy; memorandum by Roy Glenday [Economic Director, Federation of British Industries] on the origin and development of the Most-Favoured Nation principle in tariff treaties.