The surviving personal and legal papers of Thomas Mackay Cooper, Baron Cooper of Culross, judge and historian (1892-1955). Lord Cooper passed Advocate in 1915 and was created a K.C. in 1927. He was Conservative M.P. for West Edinburgh, 1935-41, Solicitor-General for Scotland, 1935, and Lord Advocate, 1935-41. In 1941 he succeeded as Lord Justice Clerk with the judicial title of Lord Cooper, and became Lord Justice General and Lord President of the Court of Session from January 1947 to his resignation in December, 1954. In addition to a very distinguished legal career, Cooper had a lifelong interest and involvement in Scottish historical studies and particularly in legal history. A founder of the Stair Society, his most substantial contribution to their series was Regiam Majestatem (1947). He also published a study of Select Scottish Cases of the Thirteenth Century (1944), and was President of the Scottish History Society, 1946-9. A posthumous collection of Selected Papers, 1922-1954 was published by his brother (the donor of this collection), in 1957.