Correspondence and Material re: Basic English Dictionary of Mathematics Material relating to the Basic English Dictionary of Mathematics including correspondence, manuscript notes and Cambridge Magazine notices with typescript inclusions. Correspondence between L W Lockhart and The Orthological Institute regarding Basic English Dictionary of Mathematical Terms, including a copy of the "Introduction to the Basic English Dictionary of Mathematical Terms" (1952). 2 letters from C K Ogden to W Barlow regarding the Orthological Institute and it's current situation regarding copyright and various Basic English assets (Jul 1956) . Letters mention a W Gates (Honorary Secretary) and a W Haymon . 1 letter from R Daniel? on behalf of Cambridge University Press to C K Ogden concerning the publication of the "Basic Dictionary of Mathematics" (1966). 1952