An active railway in southwest Ohio has these old poles running alongside for many miles. The insulators are an eclectic collection of H.K. Porter plastic insulators, Continental Rubber ponies, various ceramics, CD 145, CD 152, CD 154, CD 155 and CD 214 glass insulators. Nothing super rare, but nice to see tons of glass still up in the air.

The strange "insulator" on the right side of the top crossarm is a Zenaida macroura.

EDIT: Sorry for the cryptic comment above, I received some email and garnered a question about this on the ICON mailing list. I am referring to the Mourning Dove that's sitting on the top crossarm. He's a really common bird here in Ohio and I referred to him by his Latin name in the same manner that insulator collectors use the CD numbers, just for fun. A lot of the poles here in Ohio have the brackets that are on the top crossarm. I think I know where several are on downed poles if someone really needs a rusty and possibly damaged example for their collection. You'll have to find your own doves, though. Cheers, Greg (Dayton, Ohio)