Letter from Otto Robert Frisch, on a paper 'A phenomenological approach to meson production in nucleon-nucleon collisions' by E A Power, to D C Martin, assistant secretary of the Royal Society Paper reference code: A118 Frisch remarks the paper by Miss Power on Meson Theory is outside his 'own line', and suggests he could pass it on to Dr J Hamilton, or Dr N Kemmer. He is glad to hear the paper A58 by J M Cassels has been accepted and suggests the proofs should be read by the author. Written at University of Cambridge, Department of Physics, Cavendish Laboratory, Free School Lane, Cambridge [England]. [Published in Proceedings A, 1951]. Endorsed on recto as received 11 June 1951. 9 June 1951