AstroElectric's photos with the keyword: brown insulators

I think this might be cedar? I've seen similar breeds of poles used with sub-transmission lines from the late-1960's / early 1970's which are grey. The most difficult ones I've had finding brandings.

A little tall this pole is, isn't it? : P But I wonder about the vintage it is but I reckon the 1950's-early 60's. I think it's cedar. I can't wait to check the poles of the 69 or 138kV line nearby with poles* similar to this. I also check for date nails but haven't found a single one in Eaton yet. *: Those long composite line post poles. There's a 69kV AND I believe a 138kV line in the vacinity. I'm going to check EVERY pole on the line along the street for brandings. Tough to find ANY markings on those types of poles but I'm sure there's something!

A nice late 1950's DP&L pole. When inspecting a branding, many times the most difficult section to read is the year, unlike the brand name or the height. But the pole read: SWP 1959 SPC Class 4 40'.