3,000 posters from around the world, that all try to raise awareness of HIV/Aids, have been digitised by staff at The Wellcome Library in central London.
So, to mark World Aids Day on 1 December, two of the librarians, Julia Nurse and William Schupbach, explain some of the shocking and subtle ways that health campaigners have tried to get their messages across.
All images courtesy Wellcome Library. Music by World Party and courtesy KPM Music.
Slideshow production by Paul Kerley. Publication date 1 December 2009.