This might be helpful in answering the questions:
best,
-Peter Allen
Evans Map Room
Baker-Berry Library
Dartmouth College
25 North Main ST
Hanover, NH 03755
(603) 646-2579
https://www.dartmouth.edu/~library/maproom/
Click
here for current hours
From: Maps-L: Map Librarians, etc. <[log in to unmask]>
On Behalf Of Brendan Whyte
Sent: Wednesday, June 19, 2019 3:58 AM
To: [log in to unmask]
Subject: Columbus Ohio 250k slope map
We have discovered a 1:250,000 toposheet for Columbus, Ohio, published 1972, that is listed as "experimental printing" and shows 4 classes of slope zones (<5%, 5-10%, 15-30%, >30%)
in yellow and brown shades.
Can anyone tell me if this was a one-off or are there other 1:250,000 topo sheets of the coterminous US that also show slope rather than topography?
We're not sure whether to catalogue this map as a single, a series, or just include a note about it in our US 250k topo series record.
Thanks
Brendan Whyte
National Library of Australia