Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Secretary of Custom House; Lower Thames Street, E.C.3. Informs Custom House that the Royal Society has considered the cinematograph film that Professor H. Balfour wishes to import, and is of the opinion that it fulfils the conditions set out in section 8 of the Finance Act 1928 [exemption of solely scientific films from customs duty, provided the Royal Society certifies them]. 23 March 1930