Letter from John Edward Lennard-Jones to D C Martin, concerning two papers: 'Electronic wave functions. XI. A calculation of eight variational wave functions for Cl, Cl-, S and S-' by Samuel Francis Boys and V E Price, and 'Electronic wave functions. XII. The evaluation of the general vector-coupling coefficients by automatic computation' by Samuel Francis Boys and R C Sahni Paper reference code: A133 and A134 Lennard-Jones is unable to referee both papers due to time constraints. Written at University College of North Staffordshire [England]. [Both papers published in Philosophical Transactions A, 1954]. Endorsed on recto as received 25 June 1953. 24 June 1953