Letter from [Alan Archibald Campbell] Swinton, to Doctor Alfred Gradenwitz, Cosslerstrasse 20, Berlin-Freidenau Informs that his previous letter was forwarded to his old address at 66 Victoria Street. Believes that the best plan is to send him the enclosed copy of a paper he wrote upon Television in 1924 [enclosure not present]. Comments he has written on the subject since but at present is engaged in writing an article for Modern Wireless, which will bring his ideas on the subject up to date, promising to send a copy once it has been published. 19 April 1928