-------- Original Message --------
Subject: Re: [Fwd: Re: [Fwd: RE: [Fwd: maps displaying projections]]]
Date: Sat, 12 Apr 2003 00:07:14 +0200
From: "Baarnhielm, Goran" <[log in to unmask]>
To: Maps and Air Photo Systems Forum <[log in to unmask]>

------------------
Marc21 field 008 positions 22-23 is for projection, there is a list of
codes, and that field should be searchable I suppose, but perhaps not
many library systems support that?
Regards
Göran Bäärnhielm

*******************************************************************
 Göran Bäärnhielm, Map Curator
 Kungl. biblioteket - The Royal Library - National Library of Sweden
 P.O. Box 5039, SE-102 41 Stockholm, Sweden
 Tel.: +46-8-463 4180. Fax: +46-8-463 4328.
 E-mail: [log in to unmask]
 *******************************************************************

----- Original Message -----
From: "Johnnie D. Sutherland" <[log in to unmask]>
Date: Friday, April 11, 2003 10:31 pm
Subject: [Fwd: Re: [Fwd: RE: [Fwd: maps displaying projections]]]

> -------- Original Message --------
> Subject: Re: [Fwd: RE: [Fwd: maps displaying projections]]
> Date: Fri, 11 Apr 2003 08:51:47 -0400 (EDT)
> From: Ken Grabach <[log in to unmask]>
> To: Maps and Air Photo Systems Forum <[log in to unmask]>
>
> ------------------
>        I would like to give a bit of clarification to my query
> regardingthe above topic.  I may have caused some confusion by
> referring in the
> preface to the query to some information regarding the cataloging
> of the
> map. Some respondents have mentioned the mathematical fields,
> indicatingthat the projection information appears in MARC records
> in the fixed
> field
> Proj, and in subfield b of field 255.  I am aware of this, have been
> using
> these fields all the time I have been cataloging maps, 1980-1981, and
> 1997
> to the present.  The information in these fields actually begs my
> question.
>
>        These fields are not searchable.  Someone looking for an
> exampleof a map using a particular projection, a recurring
> assignment for a
> class
> here at this university, cannot make any use of these fields to help
> them
> retrieve a map.  This assignment has been a challenge, as it has
> alwaysbeen necessary to come up with a map that MIGHT have been
> prepared with
> a
> particular projection (let us say, Oblique Transverse Mercator),
> only to
> find that they actually were prepared with some other projection,
> similar
> but not identical (say some other Transverse Mercator, but not
> Oblique)to
> the one needed.
>
>        In that light, I discovered the subdivision .B72 for map call
> numbers in LC classification.  Has anyone found this a useful
> method to
> classify some maps?  Put another way, have any of you found it
> worthwhile
> to set aside a small selection of maps because of their particular
> projections, such as Peter's, Goode's Homosoline, Cordiform, or other
> distinctive projections, etc., if there are users who might from
> time to
> time need to look for a map showing a particular projection?  Please
> note
> I have no intention to make this a large file.  I intend to
> continue the
> subject cataloguing of my collection by the usual methods.  I want
> merely
> to make a small file, with subject headings for their projections, so
> that
> I can help students to find a projection when they need one.
>
> Ken
> ___________________________
> Ken Grabach                           <[log in to unmask]>
> Maps Librarian                         Phone: 513-529-1726
> Miami University Libraries
> Oxford, Ohio  45056  USA
>