Letter to Richard Vynne Southwell, regarding a paper 'Relaxation methods applied to engineering problems VIIA - Biharmonic analysis as applied to the flexure and extension of flat elastic plates' by L Fox and Richard Vynne Southwell Sectional Committee: Engineering Sends two proofs of the paper, one of which may be kept if treated as a confidential document, otherwise it should be returned to the Royal Society. Asks if the Government departments may require copies, and he will make enquiries. [Published in the Philosophical Transactions of the Royal Society] No received date. 17 July 1941