Papers relating to the Royal Society's Library and its collections Royal Society Library files: four groups of material, dealing with aspects of the Library Committee (MDA/G/1); printed and manuscript acquisitions to the Library (MDA/G/2); portrait acquisitions (MDA/3); and a miscellany, including museum objects and publications (MDA/G/4). MDA/G/1 Library Committee, 1937-1952; (file G.1.2 1944-1949 includes correspondence and draft agreements about the acquisition of the London Mathematical Society's library by the Royal Society). MDA/G/2 Correspondence regarding Library donations and purchases, 1934-1946. MDA/G/3 Portraits, correspondence relating to acquisitions and loans, 1921-1953. MDA/G/4 Correspondence regarding loans of Leeuwenhoek letters, 1927-31; correspondence regarding catalogue of manuscripts, Vignoles snuff box and William Bullocks's 'Role of the Fellows of the Royal Society' [1940s]. 1920-1952