Reinventing the Library Collection through

Demand-Driven Acquisition

Michael Levine-ClarkCollections LibrarianUniversity of DenverDecember 8, 2011

DefinitionsPatron-Driven Acquisition (PDA)

Faculty Requests/InputUse Data

Demand-Driven Acquisition (DDA)Meets immediate need

Why DDA?

Annual Book Production, 2009

DU Pur

chas

es

North

Am

erican

Sch

olar

ly (Y

BP)

All U

nite

d St

ates

Wor

ld (U

NESCO)

0200000400000600000800000

10000001200000

Books Cataloged 2000-2004 (126,953 Titles)

4+ uses; 18.8%

3 uses; 8.2%

2 uses; 12.8%

1 use; 20.6%

0 uses; 39.6%

Books Cataloged 2000-2004 (126,953 Titles)

4+ uses; $1,084,576

3 uses; $473,060

2 uses; $738,435

1 use; $1,188,418

0 uses; $2,284,53

2

Demand-Driven Acquisitions Goals

Broaden the collectionMore titlesMore publishersMore subjects

Match acquisitions to immediate demandPay at point of needPay for amount of needShort-term loansPurchase-on-demand

Redefining the CollectionEverything we can provide in a

timely manner

Ultimately, bounded only by budget

What We’re Doing at DU

eBook Library (EBL)Began May 2010

Loaded 42,000 records into catalog (now 65,000)

No budget for FY 2010

Budgeted $150,000 for FY 2011

The EBL ModelFirst five minutes free

STL for three usesOne day or one week10-15% list price

Purchase on fourth useList price

DU EBL Data (5/1/10-6/30/11)

Actual List

325 titles purchased $23,753 $23,753

3,599 titles with at least one STL

$49,171 $236,037

6,477 titles with at least one browse

$0 $473,378

Total (10,076 titles) $72,924 $733,168

Savings $660,244

Cost Per Transaction

Purchase Type

Total Cost Cost per Transaction

STL $49,171 $9.21

Autopurchase $23,753 $73.09

The FutureE-Books on demand

Local print-on-demand option

Make accessible all that we can afford

Thank YouMichael Levine-ClarkCollections LibrarianUniversity of Denver

michael.levine-clark@du.edu