-------- Original Message --------
Subject:        Re: number of USGS topo's
Date:   Mon, 16 Jul 2007 16:40:15 -0400
From:   <[log in to unmask]>
Reply-To:       [log in to unmask]
To:     Maps, Air Photo & Geospatial Systems Forum <[log in to unmask]>

you have that correct. I quote a USGS topo page statistic on our topo page at UB
and here is the breakdown:

Scale of Series         Number of Maps
1:24,000        53,252
1:25,000 Alaska         237
1:25,000 7.5" X 15"     192
1:63,360 Alaska         2905
1:100,000       1813
1:250,000       663
American Samoa  11
Guam    20
Micronesia      76
Mariana Islands         28
Puerto Rico     95
Virgin Islands  24

I can't remember the date of completion but it was within the last decade. Note
that not all of the US is at 24,000 either. there are some areas that were done
at a smaller scale because of the immensity and remoteness of some areas.

David J. Bertuca, Map Librarian
University at Buffalo Libraries

On Mon Jul 16 15:17 , Maps-L <[log in to unmask]> sent:

>-------- Original Message --------
>Subject:        number of USGS topo's
>Date:   Mon, 16 Jul 2007 13:44:32 -0500
>From:   Brimmage, Darlene [log in to unmask]>
>To:     [log in to unmask]>
>
>
>
>Hi!!
>
>I am speaking to a group next week about material in our Map Collection.
>
>I was trying to verify some info that I thought I had read on this list ---
>
>that there are 55, 000 --- 7.5 minute maps
>
>and that USGS completed mapping the entire US at this scale in the last
>5 to 7 years????
>
>How far off is my memory??
>
>Called USGS and they didn’t seem to have this info at their finger tips….
>
>thought someone on the list might.
>
>Thanks
>
>Darlene Brimmage
>
>Map Specialist
>
>Dallas Public Library
>
>