Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 714
FEDERAL SOCKET BUSHINGSBushings in Place No. 550. WITH COMBINATION BFEDERAL 5 LIGHT CLUSTER These clusters are designed for use with either meridian or incandescent lamps.For outdoor lighting, especially in exposed places, their weatherproof and unbreak-able qualities make them very desirable. They…
Building materials
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