1) The document analyzes the aggregate collection of four major art libraries in New York City - Brooklyn Museum Library, Frick Art Reference Library, Metropolitan Museum of Art Library, and Museum of Modern Art Library. 2) It finds that together they hold over 962,000 unique titles, with 57-70% of each institution's collections being uniquely held. 3) The analysis also compares the aggregate NY collection to other library collections, finding it has 34% overlap with other NYC research libraries but 79% uniqueness compared to the Getty Research Institute.

1. RLG Programs
Rarity is common:
Collection Analysis of
four NYC Art Libraries
Günter Waibel
RLG Programs, OCLC
Milan Hughston
Museum of Modern Art
ARLIS/NA Denver
4 May 2008

2. Four NYC art libraries…
Introducing: NYARC
New York Art Resources Consortium
Brooklyn Museum Library
Frick Art Reference Library
Metropolitan Museum of Art, Thomas J. Watson Library
Museum of Modern Art Library
Günter Waibel - ARLIS 2008
RLG Programs 2 Rarity is Common - Collection Analysis of four NYC Art Libraries

3. Collection Analysis…
What is aggregate collection analysis?
Analyzes combined holdings of multiple institutions as a
single (aggregate) collection
Shows Patterns of overlap; uniquely-held materials
Business intelligence for decisions about collaboration
Günter Waibel - ARLIS 2008
RLG Programs 3 Rarity is Common - Collection Analysis of four NYC Art Libraries

4. Background - NYARC Collection Analysis
The situation
The data
Extracts from RLG Union Catalog & SCIPIO (January
2007)
Disclaimer
The report:
http://www.oclc.org/programs/publications/reports.htm
Günter Waibel - ARLIS 2008
RLG Programs 4 Rarity is Common - Collection Analysis of four NYC Art Libraries

5. I.
The NYARC Aggregate
Collection
Günter Waibel - ARLIS 2008
RLG Programs 5 Rarity is Common - Collection Analysis of four NYC Art Libraries

6. Combined NYARC Holdings
Brooklyn, Frick, Met, MoMA
Unique Titles
RUC: 831,657
SCIPIO: 130,633
Total: 962,290
Legend:
RUC = RLG Union Catalog
SCIPIO = Auction Catalogs
as of January 2007
Günter Waibel - ARLIS 2008
RLG Programs 6 Rarity is Common - Collection Analysis of four NYC Art Libraries

7. Holdings Overlap
RUC(-unique) + SCIPIO
Legend:
RUC (-unique)= excluding “intrinsically unique”
“intrinsically unique” = 117,488 records coded as “collections”
Günter Waibel - ARLIS 2008
RLG Programs 7 Rarity is Common - Collection Analysis of four NYC Art Libraries

8. Degree of local uniqueness
RUC(-unique) + SCIPIO
Individual Institutions vis-à-vis NYARC
57% - 70% of each individual institution unique
Individual Institutions vis-à-vis each other
87% - 96% of uniqueness in 1-on-1 comparison
Legend:
RUC (-unique)= excluding “intrinsically unique”
“intrinsically unique” = 117,488 records coded as “collections”
Günter Waibel - ARLIS 2008
RLG Programs 8 Rarity is Common - Collection Analysis of four NYC Art Libraries

9. II.
Characteristics of the NYARC
Aggregate Collection
Günter Waibel - ARLIS 2008
RLG Programs 9 Rarity is Common - Collection Analysis of four NYC Art Libraries

10. Serials Other
2% 1%
Collections
12% RUC: 156 different languages identified
Top 5:
Monographs English 48 percent
German 12 percent
85% French 11 percent
Italian 7 percent
Spanish 3 percent
140000
120000
100000
80000 69,210 published
60000 before 1923
40000
20000
0
31 0
51 0
71 0
91 0
11 0
31 0
51 0
71 0
91 0
11 0
31 0
51 0
71 0
91 0
0
17 700
17 72
17 74
17 76
17 78
18 80
18 82
18 84
18 86
18 88
19 90
19 92
19 94
19 96
19 98
00
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-2
1
e-
11
pr
Günter Waibel - ARLIS 2008
RLG Programs 10 Rarity is Common - Collection Analysis of four NYC Art Libraries

11. III.
The NYARC Aggregate
Collection in context
Günter Waibel - ARLIS 2008
RLG Programs 11 Rarity is Common - Collection Analysis of four NYC Art Libraries

12. NYARC vis-à-vis the RLG Union Catalog
350000 33
300000
t it %o
les f NY
Chicago Manual of Style
Number of Clusters
14th Edition
250000
un ARC
Guide to Reference Books
10th Edition
200000
iqu
Chicago Manual of Style
150000 13th Edition
100000
50000
e
0
91 – 100
101 – 110
111 – 120
121 – 130
131 – 140
141 – 150
151 – 160
1
2 – 10
11 – 20
21 – 30
31 – 40
41 – 50
51 – 60
61 – 70
71 – 80
81 – 90
> 160
Size of Cluster
Günter Waibel - ARLIS 2008
RLG Programs 12 Rarity is Common - Collection Analysis of four NYC Art Libraries

13. NYARC vis-à-vis SCIPIO
35000 23
t it %o
les f NY
30000
Number of Clusters
25000
20000 un ARC Works of Art from the Bute Collection
iqu
Christie, Manson, and Woods
Collection Lagerfeld
e
15000 Christie’s Monaco S.A.M
Old Master Paintings
10000 Sotheby’s
5000
0
1 3 5 7 9 11 13 15 17 19 21 23 25 27 44
Size of Cluster
Günter Waibel - ARLIS 2008
RLG Programs 13 Rarity is Common - Collection Analysis of four NYC Art Libraries

14. NYARC* vis-à-vis WorldCat
*not including auction catalogs
350,000
39
Number of NYARC Titles
300,000
t it %o
250,000
les f NY
200,000
un ARC
150,000 iqu
100,000 e
50,000
0
to 0
to 0
00
0
0
0
0
to 0
0
01 0 0
10 o 5
30 20
50 40
70 60
80
01 00
50
1
3
to
to
to
to
t
11
1
1
1
1
1
90
40
20
WC Libraries Holding Title
Günter Waibel - ARLIS 2008
RLG Programs 14 Rarity is Common - Collection Analysis of four NYC Art Libraries

15. NYARC vis-à-vis other research libraries
vis-à-vis NYPL, Columbia and NYU
Overlap: 34 percent (~1/3)
Uniqueness: 66 percent (~2/3)
vis-à-vis Getty Research Institute
Overlap: 21 percent (~1/5)
Uniqueness: 79 percent (~4/5)
Günter Waibel - ARLIS 2008
RLG Programs 15 Rarity is Common - Collection Analysis of four NYC Art Libraries

16. Parting thoughts…
Uniqueness: collaborate for extending your reach
Resource sharing, digitization…
Overlap: collaborate for economic benefit
Shared storage, joint collection development…
Günter Waibel - ARLIS 2008
RLG Programs 16 Rarity is Common - Collection Analysis of four NYC Art Libraries