here's a 1933 "O" mold..Owens Illinois? From reading, shows the style with just the O embossed was from '33 when they started this...of course,i could be ignorant.
Nice group of glass. Some of your insulators are very old and are out of the ordinary.
Brookfield produced those crown embossed 145 beehives for Western Union and other telegraph companies in the 1880s-1890s so they're plentiful, but they come in so many varieties that you could accumulate hundreds without having an exact duplicate. The shop numbers on the crown allowed the company to tally the production of a glass pressing team. It's not unusual to find backwards or upside-down numbers or letters, blot-outs of numbers with a new number engraved over it, etc.
I think that's a CD 126 Brookfield with the 55 Fulton St address, and you have a nice old piece from the mid 1870s-1882. Western Union used the CD 126 as their standard before adopting the CD 145 beehive in 1883. These probably come in even more embossing varieties than the beehives. Most of the aqua variants are about 5-15, with some oddities, misspellings and such going for a bit more.
Your Brookfield pony (I'm afraid I can't quite tell from the photo if it's a 101 or 102... I'm leaning toward agreeing with you on 101) - interesting color. I can't quite tell if it's green or aqua. Aquas are a few dollars, a strong green in the 20ish range.
I love that 160 Brookfield baby signal -- what a great color! The skirt EL is ghost embossing, caused when the molten glass glob touches the mold lettering and cools just enough to retain the letters, then "squirms" around the mold a bit when the glass worker lowers the threaded plunger to form the insulator. The top marking is a shop number or letter. Looking at the photo, it looks more like a 4 to me. A friend of mine who specializes in this shape says that 4 is the most common shop number for these. I think you might be thinking of Lynchburg with the L, and you're exactly right that Lynchburg recycled molds from a few other companies. Brookfield went out of business in 1922, after which Lynchburg bought some old Brookfield molds and re-engraved them with their name and sometimes the "L in oval" trademark. Book prices on the greens are in the 10-40 range, depending on the shade. I hope you have a window to show off that beauty and you enjoy looking at it frequently!
I've heard various opinions on the 0 on Hemingray molds indicating Owens-Illinois. Makes sense to me, but I know some Hemingray historians aren't 100% convinced.
The other Hemingrays - No 9, 42, 45 are all very common, but lots of people find it enjoyable to save interesting or quirky variations as they turn up.
That last H G Co beehive is a nice blue color, what we call "Hemingray blue." Book would be around 5-10.
thanks for all of the detailed info Bill! Nice to learn more info that I've dug up so far. I did mean Lynchburg. Had a site with all of the info and couldn't remember it when I was posting. and now I find it right away..go figure... http://www.lynchburginsulators.info/
the 101 is a bit darker green than a 7up bottle, not much, but a bit darker.
Now that you say #4 for the top of that 160, I'd totally agree. It's pretty clear.
I have quite a few more stuffed in boxes, I'll have to dig some up.