digital topo maps and aerial photography of PA online

[Derrick J Brashear]

Yeah, this would be much easier if I had completed the meta-list for
things appropriate to all 3 lists, and as soon as I get time I will, I
swear, guys... (and speaking of which, interest in the Altoona and logan
Valley system, anyone?)

So I assume you guys know about the digitized 1:24000 USGS topo maps of
PA, and the aerial survey stuff covering the same areas, online on the
PASDA server at Penn State? The topo maps are in tiff format, stuffed in
zip files, at:
ftp://penne.deasy.psu.edu/pub/pasda/drg24k/
The aerial photography in
ftp://penne.deasy.psu.edu/pub/pasda/doq/

For those of you who use Windows (I use Linux at home, and Linux and
Solaris at work, so it does me no good) the USGS has map browser software.
I don't remember where you can get it but if you go to
http://www.memepool.com, choose "search" and search for "pasda" you should
find a short article I wrote including links to it.

-D