Fallout: Equestria Resource

I want to know what we have information-wise considering certain facts about the Single Pony Project/Sustainable Pegasus Project. Namely, how many towers are there, do we know a designation system for the towers, and if we know any specific locations for the towers. Mostly, I just want to know the number, as I'm not sure we have any specifics for the other two questions.

The amount of towers is never given, but every main city seems to have one or two.
Fillydelphia had one
There was on visible from the train too old Appleosa.
Manehatten had one i'm sure.

But yeah, I'm just going with, "every main city has a tower, because how else would DJ-P0N3 have been able to see the wastes and comment on it?"

Huh... I was sure a number was mentioned when Dash was pitching it to Luna... Maybe I'll just have to hunt through the chapters again to confirm I'm crazy.
Or not.
I'm willing to bet on delusional though.

hi hi

In the Lightning Orb vision, they say there were at least four dozen towers (48). Though I seem to remember hearing someone say there were fifty of them total, but I can't remember where I read that.