The timelines below provide key dates for each collection, including the version of each database described in this report. Interviews with archivists and providers (as referenced in the glossary) took place in 2018.

Microfilming Era

1940-2010 British Library 19th Century Newspapers: British Library newspaper microfilming
1951-present Suomen Kansalliskirjaston digitoidut sanomalehdet: Suomen Kansalliskirjaston newspaper microfilming
1960 Hemeroteca Nacional Digital de México: Hemeroteca Nacional microfilm newspaper microfilming
1970-present Delpher: Koninklijke Bibliotheek newspaper microfilming
1974-present Times Digital Archive: The Times newspaper microfilming
1982-2011 Chronicling America: United States Newspaper Program preservation programme
1983-present Papers Past: National Library of New Zealand newspaper microfilming

Digitisation Era

1990 Suomen Kansalliskirjaston digitoidut sanomalehdet: Helsinki University Library Center for Microfilming and Conservation established
1992 Trove: ANPlan established
1993 ZEFYS: Newspaper department established at the Berlin State Library
1997 Suomen Kansalliskirjaston digitoidut sanomalehdet: Microfilming process moved to the National Centre for Preservation and Digitisation
1998 Suomen Kansalliskirjaston digitoidut sanomalehdet: Formation of the Nordic digitisation project TIDEN
1999 Delpher: Digitisation begins
1999 ZEFYS: Berlin State Library installs a reprographic company in the newspaper department
2000 Hemeroteca Nacional Digital de México: Planning for HNDM begins
2000 Papers Past: Digitisation begins
2000 Papers Past: Founding
2001 British Library 19th Century Newspapers: 20,000 pages processed in the first two months
2001 British Library 19th Century Newspapers: Begins developing a prototype system for newspaper digitisation
2001 Papers Past: Website launched
2001 Suomen Kansalliskirjaston digitoidut sanomalehdet: Digitisation begins
2001 Suomen Kansalliskirjaston digitoidut sanomalehdet: First digitised newspaper collection launched
2001 Suomen Kansalliskirjaston digitoidut sanomalehdet: Founding
2001 Trove: National Library in Canberra takes on the role of coordinating ANPlan
2002 Hemeroteca Nacional Digital de México: Digitisation begins
2002 Hemeroteca Nacional Digital de México: First HNDM interface launched
2002 Times Digital Archive: First content release (1936-46)
2002-2003 Times Digital Archive: Initial 1785-1985 material digitised
2003 Times Digital Archive: Second content release (1880-1985)
2003 Times Digital Archive: Final content release (1785-1879)
2004 British Library 19th Century Newspapers: Founding
2004-2007 British Library 19th Century Newspapers: First digitisation phase (British Library 19th Century Newspapers Part I)
2005 Chronicling America: Digitisation begins
2005 Hemeroteca Nacional Digital de México: Founding
2005 Papers Past: National Library of New Zealand pilot project using OCR to generate full text and make newspapers searchable
2005-2007 Chronicling America: First round of digitisation funding
2006 Suomen Kansalliskirjaston digitoidut sanomalehdet: Automated encoding of word coordinates and grayscale scanning implemented
2007 Chronicling America: Founding
2007 Delpher: Digital Daily Newspapers/Dutch Digital Databank (DDD) digitisation begins
2007 Papers Past: Website relaunched
2007 Times Digital Archive: Gale acquired by Cengage
2007 Trove: Digitisation begins
2008 Trove: Founding of Trove
2008 (Jul.) Trove: Australian Newspapers Beta service launched
2008 (Aug.) Trove: Crowdsourced text correction incorporated
2008-2009 British Library 19th Century Newspapers: Second digitisation phase (British Library 19th Century Newspapers Part II)
2009 Trove: Australian Newspapers service incorporated into Trove
2009 ZEFYS: Digitised newspaper portal launched
2011 Chronicling America: United States Newspaper Program ceases operations
2011-2013 Chronicling America: Many technical metadata fields reclassified as ‘recommended’
2012 Europeana: Founding
2013 Delpher: Founding
2015 Hemeroteca Nacional Digital de México: Most recent HNDM interface redesign
2016 Europeana: TEL service closed
2016 (Jul.) Chronicling America: Expands date range from 1836-1922 to 1690-1963
2018 British Library 19th Century Newspapers: Metadata separated into three XML files instead of one

Metadata Versions Currently Included in the Atlas

2013 (Sept.) British Library 19th Century Newspapers: Jisc Version
2017 (Sept.) Chronicling America
2018 (Feb.) Trove
2018 (Apr.) Papers Past
2018 (Apr.) Times Digital Archive
2018 (Sept.) Europeana
2018 (Oct.) Hemeroteca Nacional Digital de México
2018 (Oct.) Suomen Kansalliskirjaston digitoidut sanomalehdet
2018 (Nov.) Delpher
2018 (Dec.) British Library 19th Century Newspapers: Gale Version
2019 (Dec.) ZEFYS