The earliest catalogue known for the GEC's street lighting range, this 1914 collection (fifth edition) shows a varied range of post top
lanterns, some with multiple lamps.
What is interesting is what's missing. No polar diagrams, no light distribution discussions, no light flux control other than enamelled reflectors.
The range is literally the gas and arc lantern designs of the time, fitted with one, or more, incandescent lamps.
(Note that some of these lanterns may not actually be for street lighting, being designed for area and/or shop lighting. Not having the original
catalogue makes it difficult to determine the validity of some of these fittings. Rather than miss legitimate examples, then all the pages have
It wouldn't be until the 1920s when the approach to street lighting became more scientific.