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National Library of Israel Service counter IMG 4500.JPG
Picture of an Israeli librarian, using Wikipedia, used to publicise the project
Date 15 January 2016 (2016-01-15)
Location Online
Website meta.wikimedia.org/wiki/The_Wikipedia_Library/1Lib1Ref

#1Lib1Ref ("One Librarian, One Reference") was a Wikipedia publicity drive that asked each librarian on Earth to mark the 15th anniversary of the foundation of Wikipedia, on 15 January 2016, by adding a citation to the online encyclopedia.[1][2][3]

The organisers estimated that if each librarian on the planet spent 15 minutes adding a citation, then the English Wikipedia's backlog of 350,000 [citation needed] templates would be cleared.[4]

The week long event, which ran from 15-23 January, used the hashtag "#1lib1ref".[5]

In 2017 and 2018, the "#1lib1ref" campaign expanded to a three-week event.[6]


As of the end of the campaign, 1,232 revisions on 879 pages, by 327 users in 9 languages used the hashtag #1lib1ref in the edit summary with the total edit count estimated to be around 50% below the actual number. Furthermore the hashtag was used in 1100 Twitter posts by over 630 users.[7]


  1. ^ Rust, Amanda (14 January 2016). "#1Lib1Ref: Imagine a World Where Every Librarian Added One More Reference to Wikipedia". Retrieved 15 January 2016. 
  2. ^ "#1Lib1Ref ACRL TechConnect Blog". ACRL. 15 January 2016. Retrieved 15 January 2016. 
  3. ^ Scheeder, Donna (15 January 2016). "Wikipedia birthday greetings". International Federation of Library Associations and Institutions. Retrieved 15 January 2016. 
  4. ^ "The Wikipedia Library/1Lib1Ref". Wikimedia Foundation. Retrieved 15 January 2016. 
  5. ^ Stinson, Alex (15 January 2016). "#1Lib1Ref: Help Celebrate Wikipedia's Birthday during 15-23 January by Adding a Reference". Retrieved 15 January 2016. 
  6. ^ "1Lib1Ref". Folgerpedia. Folger Shakespeare Library. Retrieved 23 January 2018. 
  7. ^ "1Lib1Ref Lessons - Outcomes by the numbers[edit]". Retrieved 11 December 2016. 

External links[edit]