Tractatus Logico-Philosophicus
Ogden helped with the English translation of Wittgenstein's "Tractatus Logico-Philosophicus". In fact the translation itself was the work of F. P. Ramsey; Ogden as a commissioning editor assigned the task of translation to Ramsey, supposedly on earlier experience of Ramsey's insight into another German text, of Ernst Mach. The Latinate title now given to the work in English, with its nod to Baruch Spinoza's "Tractatus Theologico-Politicus", is attributed to G. E. Moore, and was adopted by Ogden. In 1973 Georg Henrik von Wright edited Wittgenstein's "Letters to C.K. Ogden with Comments on the English Translation of the Tractatus Logico-Philosophicus", including correspondence with Ramsey.