sigb.net
Research index for locating articles, books, authors and citation information.
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Published directory entries matching your search.
lapirateca.com
Search an online collection of books, documents, media and archival records.
pittsburghqueerhistory.com
Digital library for searching books, documents, images and online collections.
resources.plains2peaks.org
Regional digital library in the United States, and service hub for DPLA.
pleias.library.upatras.gr
Digital library at the University of Patras.
iii.com
Search publications, authors, citations and related academic metadata.
nauka-polska.pl
Online database of science in Poland.
polona.pl
Digital library for searching books, documents, images and online collections.
larramendi.es
Browse digitized texts, images, archives and cataloged cultural materials.
porbase.bnportugal.gov.pt
Portuguese National Bibliographic Database.
portacultura.gr.ch
Find digitized publications and collection items through an online library.
antenati.cultura.gov.it
Italian national online portal for genealogical and civil status records held in state archives, managed by Direzione Generale Archivi.
prdl.org
Database of digitized books from the Early Modern period.
duesseldorf.de
Press articles about Heinrich Heine in German and international press.
bne.uni-osnabrueck.de
Find digitized publications and collection items through an online library.
moderne-kunst.org
Search an online collection of books, documents, media and archival records.
priceonepenny.info
Bibliographic database of literature published in penny weekly numbers in London between 1837 and 1860.
catalog.princeton.edu
Catalog of Princeton University Library.
profiles.nlm.nih.gov
US National Library of Medicine's digital archive of scientists, physicians, and others who have advanced science.
benyehuda.org
Search an online collection of books, documents, media and archival records.
muse.jhu.edu
Online database of journals and ebooks.
Browse digitized texts, images, archives and cataloged cultural materials.
prozhito.org
Non-profit volunteer project and research center for the study of ego documents.
ebooks.psik.io
Digital library for searching books, documents, images and online collections.