This material was largely compiled by Wolstenholme. The company's chief engineer, F H W Higgins, also collected some material based on data covering the years 1872 - 1915.
The volume includes 42 photographs principally relating to telegraphic equipment. There is also a portrait of Sir Wilfred King, the company secretary from 1884 - 1898 and then managing director from 1898 - 1943. With 40 negatives, on 6 film strips.