Fantastic, thank you Peter! Brendan ---------------------------------------------------------------------- Date: Tue, 2 Jul 2019 12:24:48 +0000 From: Map Room <[log in to unmask]> Subject: Re: Columbus Ohio 250k slope map This might be helpful in answering the questions: https://books.google.com/books?id=iwSixxUG64wC&lpg=PA287&ots=hTRyuWjs1V&dq=%221%3A250%2C000%22%20%22slope%22%20%22ohio%22&pg=PA287#v=onepage&q=%221:250,000%22%20%22slope%22%20%22ohio%22&f=false best, -Peter Allen Evans Map Room Baker-Berry Library Dartmouth College 25 North Main ST Hanover, NH 03755 (603) 646-2579 [log in to unmask] https://www.dartmouth.edu/~library/maproom/ Click here<https://www.library.dartmouth.edu/libraries-hours/evans-map#dcl-hours-anchor> 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