DVD copy of black and white filmed sound recordings made of brief speeches delivered from written texts by the following.

The recordings of (i), (iii) and (iv) were filmed by G.B. Instructional Ltd. In collaboration with The Institution of Electrical Engineers. Copyright in the films is held by The Institution of Engineering and Technology (as the Institution of Electrical Engineering became in 2006), Savoy Place, London, WC2R 0BL; their reference is IET Archives Film Collection and web address www.theiet.org/archives

• (i) Sir Joseph J. Thomson, OM, FRS, Mathematical Physicist, Master of Trinity College, Cambridge, President of the Royal Society 1916-1920' (18 October 1934)
• (ii) [Lord Rutherford] of Nelson, OM, FRS, Pioneer in Atomic Physics' (December 1935)
• (iii) 'Sir William Henry Bragg, OM, KBE, DSc, FRS Physicist, Experimentalist and Teacher (6 December 1934)
• (iv) 'Sir Oliver Joseph Lodge, DSc, FRS, Mathematical Physicist' (6 December 1934)