Captain Henry Bradwardine Jackson R.N. (1855-1929) in 1897. From: Pocock, R. F. &amp; Garratt, G. R. M. (1972), The Origins of Maritime Radio: The Story of Introduction of Wireless Telegraphy in the Royal Navy Between 1896 and 1900 H.M. Stationery Office.
R.F. Pocock; G.R.M. Garratt
Photo of illustration from original book