A lecture entitled " the theory and practice of submarine mining as practised by His Majesty's Ships, period 1 April 1907 - 1 April 1910" delivered by Tristan Dannreuther at the School of Military Engineering, Royal Engineering Institute, Chatham on 28 March 1912. Also lantern slide prompt cards and negatives together with related correspondence 7 Dec 1911 - 1 April 1912.
A lecture entitled " the theory and practice of submarine mining as practised by His Majesty's Ships, period 1 April 1907 - 1 April 1910" delivered by Tristan Dannreuther at the School of Military Engineering, Royal Engineering Institute, Chatham on 28 March 1912. Also lantern slide prompt cards and negatives together with related correspondence 7 Dec 1911 - 1 April 1912.