Agreement, 24 Dec 1881, between Ernst Werner Siemens, Charles William Siemens & Carl Heinrich Siemens [Siemens Brothers] of 12 Queen Anne's Gate, Siemens Brothers & Co. Ltd. of 12 Queen Anne's Gate, and The London and Saint Katharine Docks Company, re the electric lighting of the Royal Albert Dock and maintenance of boilers, engines, machinery, masts, lanterns, lamps. With attached 'plan shewing position of electric lighting poles and engine houses'.