[PRCo] Route 56

[D Brashear]

On Mon, May 5, 2014 at 3:28 PM, Edward H. Lybarger <trams2 at comcast.net>wrote:

> The original mapping was at 15 minutes, except in the wilderness, where it
> was 30 minutes.  The 7.5 series originated about the time of the second
> war.
>
> You can find all of the historic USGS maps on their website and download
> them.
>
> Most. Some are apparently not yet scanned.



-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.dementix.org/pipermail/pittsburgh-railways/attachments/20140506/8528aaf6/attachment.html