Project Unica is an initiative by the University of Illinois Libraries to scan and preserve publications that exist as only a single known copy: https://news.il

Project Unica is an initiative by the University of Illinois Libraries to scan and preserve publications that exist as only a single known copy: https://news.illinois.edu/u-of-i-librarys-project-unica-preserves-books-so-rare-they-exist-in-only-one-copy/ https://news.illinois.edu/u-of-i-librarys-project-unica-pres...