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Date: Fri, 8 Apr 2005
From:  "Maura O'Connor" <[log in to unmask]>
Subject: Records to Pieces Ratio

Jenny
It largely depends on how you are cataloguing your collection.  At the
NLA we aim to catalogue all the sheets in series, providing individual
records for those in the Australian series.  Some series do not lend
themselves to this type of treatment however, so a collection level
record only will appear.  For our overseas series we only do collection
level records.  I would estimate about two-thirds of our collection are
maps in series, so I will leave you and/or others to work out
the proportions on that one!
Yours sincerely
Maura O'Connor
Map Curator
National Library of Australia
Canberra  ACT  2600
Phone : 61 2 6262 1280
Fax: 61 2 6161 1653
Email : [log in to unmask]


    -----Original Message-----
    From: Maps and Air Photo Systems Forum
    [mailto:[log in to unmask]] On Behalf Of Angie Cope, American
    Geographical Society Library UWM
    Sent: Saturday, 9 April 2005 3:13 AM
    To: [log in to unmask]
    Subject: MAPS-L: RE: Records to Pieces Ratio

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MAPS-L ** MAPS-L ** MAPS-L ** MAPS-L ** MAPS-L ** MAPS-L

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Date: Fri, 8 Apr 2005
From: Paige Andrew <[log in to unmask]>
Subject: Records to Pieces Ratio

    Jenny,

    As you know, I've been working in two major map collections over
    nearly 20 years, so I do have a "feel" in regards to your question,
    assuming that both large map collections (Univ. of Georgia and Penn
    State) are "typical" in scope and content. Please don't hold me to
    these numbers as being anything near accurate and/or scientific, but
    I think its about a 3 to 1 ratio of individual sheets/pieces to
    bibliographic records.

    I'm interested in seeing other comments towards your question too.

    Paige

    p.s. Looking forward to seeing you in DC in May!

    At 11:15 AM 4/8/2005, you wrote:

>     ========================================================================
>
>     MAPS-L ** MAPS-L ** MAPS-L ** MAPS-L ** MAPS-L ** MAPS-L
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>     ========================================================================
>
>     Date: Fri, 8 Apr 2005
>     From: Jenny Marie Johnson <[log in to unmask]>
>     Subject: Records to Pieces Ratio
>
>     Hi.
>
>     This probably is one of those questions that can't be answered --
>     although for some reason I vaguely remember reading or hearing a
>     discussion about it.
>
>     Is there any kind of ratio that can be expected for the number of
>     bibliographic records to the number of pieces in a "typical," fully
>     cataloged map collection?  Is there any way of saying "Since we have
>     x,000 pieces we can expect to find y,000 map records in the online
>     catalog?"
>
>     I'm not expecting there to be a truly scientific ratio!  Commonsense,
>     wisdom from the ages, or folklore/urban myth -- all ideas will be
>     helpful!
>
>     Thanks!
>
>     Jenny Marie Johnson
>     Map and Geography Librarian and
>     Assoc. Professor of Library Administration
>
>     University of Illinois at Urbana-Champaign


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