Malmo Library, Sweden, 2018
Library of Congress, Washington D.C., 2018
Lövestad Public Library, Sweden, 2018
National Taiwan University Library, 2016
New York Public Library, 2016
National Center for Atmospheric Research, 2016
National Library of Belgium, 2016
Woston Library, Oxford, 2016
The British Library, 2014
Data Archiving and Networked Services, The Hague, 2013
Scholarship in the Digital Age: Information, Infrastructure, and the Internet, 2007
Swiss National Library, Bern, 2011
With Matthew Mayernik, National Center for Atmospheric Research, 2012
Trinity College, Oxford, Encaenia Garden Party, 2013
From Gutenberg to the Global Information Infrastructure: Access to Information in the Networked World, 2000
IFLA Reception, Berlin State Library, 2003
Scholarly Communication and Bibliometrics, 1990
Chinese Academy of Sciences Library, Beijing, 2011
National Library of Slovenia, 2012
