#1Lib1Ref runs every January 15th to February 5th and every May 15th to June 5th. Join the Campaign! Translate the banner What is #1Lib1Ref? Imagine a World where Every Librarian Added One More Reference to Wikipedia. Twice per year, #1Lib1Ref — abbreviated for one librarian, one reference — calls on librarians around the world, and anyone who has a passion for free knowledge, to add missing refer