Alongside a still active transmission line, I discovered the remains of a lower voltage line that ran on wooden poles. Some of the poles had been 'modernized' (more likely the original crossarms rotted away and needed replacing) with steel crossarms, of a few types.

This style is by far one of my favorites. I've only come across two so far. Both have their flaws, but one is on a well preserved pole that came down in a swamp, and the other was up at the top of a mountain, on a piece of pole that was just about completely rotted away. The former was easier to get to, but impossible to remove. The latter was trickier to get to, but easy to remove. I can't get enough of those spiraled wires! Unfortunately the insulators were removed, and I couldn't find a trace of them in the surrounding area.

The bracket I couldn't remove (in the swamp) did have insulators- a pair of U-172s with very charismatic mottled brown glazes. I wonder if it was more of the same here?

If anybody knows what era this crossarm is from, or the full name of the company (I can read "JONES & LAU" on the arm) I'd love to hear what you know!

Edit: I was suggested that the "Jones & Lau" might be Jones & Laughlin Steel Company of Pittsburgh, PA. Thanks Matt ! This sounds correct to me- the arm itself is just angle iron, presumably whoever produced these arms purchased their angle iron from J&L, cut it to size, and drilled it to accept the pins, braces, and bolt hole.