-------- Original Message --------
Subject:        RE: Needed: topo map index showing underlying quads for 15'
sheets
Date:   Thu, 26 Apr 2007 09:52:15 -0400
From:   Boardman, Richard <[log in to unmask]>
To:     Maps, Air Photo & Geospatial Systems Forum <[log in to unmask]>

Paige,

The last index sheets I have showing the 15' sheets with the 7.5' sheets
underneath are for 1969 and 1973. Alas, there are some sections on both
that have only the 15' sheets and some with only the 7.5' maps but there
are differences between the two so you could fill in some gaps using
both. You would still have some work to do, though, filling in the rest.
I'd be happy to make you copies

Rich Boardman
Free Library of Philadelphia


-----Original Message-----
From: Maps, Air Photo & Geospatial Systems Forum
[mailto:[log in to unmask]] On Behalf Of Maps-L
Sent: Wednesday, April 25, 2007 4:35 PM
To: [log in to unmask]
Subject: Needed: topo map index showing underlying quads for 15' sheets

-------- Original Message --------
Subject:        Needed: topo map index showing underlying quads for 15'
sheets
Date:   Wed, 25 Apr 2007 16:28:38 -0400
From:   Paige Andrew <[log in to unmask]>
To:     [log in to unmask]

Hi everyone!

I'm so sure that this is out there "somewhere" but I have been
unsuccessful in finding it! So, now I turn to the many experts on
MAPS-L for assistance. Here's what is going on and what I'm looking for.

We are having all of our historic Pennsylvania 15-minute topo quads
scanned in anticipation of putting them up on the Web as a resource
in the near future. What I am trying to find is an index map to the
PA 15-minute quads that also shows the underlying four 7.5-minute
topos that make up each individual 15' quad, by name. We feel that
this would be a very useful additional resource to users of the
online 15-minute sheets and we might possibly create an interactive
index from one layer to the other for our patrons.

Does anyone know where I can find such a thing? At this point even if
its hardcopy in nature and we can scan that as a starting point that
would definitely be helpful (assuming that there isn't any copyright
issues involved).

Sincerely,

Paige Andrew
Maps Cataloging Librarian
Pennsylvania State University