New Briefing Paper: The Top 25 US Public Libraries' Collective Collection, as Represented in WorldCat

OCLC Research Scientist Brian Lavoie provides an overview for the National Digital Public Library conference.

The Top 25 US Public Libraries' Collective Collection, as Represented in WorldCat characterizes the combined collections of the top 25 US public libraries, as represented in the WorldCat database. These libraries account for more than 34 million holdings in WorldCat across 13.5 million distinct publications.

The report considers overlap vs. uniqueness of holdings for these libraries, and compares their collective collection with the collective holdings of the rest of the US public libraries whose holdings are represented in WorldCat. It also compares their collective collection to the collective WorldCat holdings of ARL member libraries, and to all US academic libraries represented in WorldCat.

The report examines the prevalence of "rare" materials in the top 25 US public libraries, certain copyright implications based on the age of collectively held materials, and the global diversity represented in these collections.

More Information

The Top 25 US Public Libraries’ Collective Collection, as Represented in WorldCat
http://www.oclc.org/research/publications/library/2011/lavoie-ndpl.pdf

National Digital Public Library (NDPL) Conference
http://ndpl.lapl.org/index.php

For more information:

Brian Lavoie
Research Scientist
OCLC Research
lavoie@oclc.org
+1-614-764-4399

Robert C. Bolander
Senior Communications Officer
OCLC Research
bolander@oclc.org
+1-614-761-5207