[PRCo] Re: an unknown Pittsburgh coal haulage trolley line?

[Derrick J Brashear]

On Sat, 6 Jan 2007, Donald Galt wrote:

> As to the exact location, go to the latest source unearthed by Sweet Old Bob:
>
> 	http://tinyurl.com/w3q3k
>
> and check out sheets 4 and 15. (Caution: I'm looking at my own copies dating
> from the 1920s and haven't bothered to look at the maps online which could
> possibly be more recent)

In general they have sheets from 1920s/30s for closer in stuff, 40s for 
further out stuff, and in some cases revisions from 50s/60s mostly where 
parkways appeared.