Letter from [Alan Archibald Campbell] Swinton, to Sir Ambrose Fleming FRS Draws attention to a letter on Television Invention he published in Nature on 8 June in which he pointed out that, on the authority of Doctor A. Dauvillier, the principle of Baird's transmitter was actually patented by Nipkow, a German, in 1884, before Baird was born. Encloses a copy for Fleming to verify the accuracy of the facts, along with a letter from Dauvillier, confirming Nipkow’s patent [enclosures not present]. Enquires if Fleming is aware of these facts. 1 July 1929