Letter from Arthur Korn, Charlottenburg, [Schlüterstraße, Berlin], to Mr [Alan Archibald] Campbell Swinton, FRS., London Thanking Swinton for sending him his papers on television, returning the favpur by sending a number of E. T. Z. in which his own article was published. Opines that all the present trials of television are without great practical value and that the difficulty lies in the telegraphic difficulty. 1 March 1929