Letter from Graham Martyn, Chief Postal Censor, War Office, to the Assistant Secretary, The Royal Society, Burlington House, W Notifies that a packet containing a thesis and a proof of an article addressed to Dr [William Henry] Young in Lausanne was intercepted by the censorship but forwarded to its destination. Explains that such material falls under the Defence of the Realm Regulation 24B, requiring a permit for dispatches to neutral European or American countries. Requests the completion of an attached declaration form to obtain a permit for future dispatches [enclosure not present]. 29 March 1917