[Letter] 1888 Oct 31, Queen Anne's Gate, Westminster [to] the Secretary, the Chemical Society, Burlington House/Alexander Siemens, [presenting to the Society a copy of W. Pole's biography of Sir William Siemens, on behalf of the late Sir William's executors] Letter 1888 Oct 31
[Letter] 1916 Mar 4, 354 Caxton House, Westminster, London, S W [to] Prof[essor] Silv[anus] P. Thompson, Morland, Chislett Road, NW / Alex[ander] Siemens. [Referring to the success of our second transformer in spite of "blue" leakage on the terminals] Letter 1916 Mar 4