Sterling Telephone and Electric Co
of 202 Tottenham Court Road, London
From 1914 to 1919 Ralph Stanley Whaley was works superintendent to the Sterling Telephone Company, Ltd., Dagenham.
1922 Maximilian Robert Lawrence joined the Sterling Telephone Co of Dagenham as works manager, a position he occupied until his death on 29th August, 1925.
1926 Marconiphone Co bought their own manufacturing company Sterling Telephone and Electric Co at Dagenham [1].