Together the collection amounts to a dizzying and sometimes disturbing visual record of centuries of human culture, and our attempts to understand our bodies, minds and health through art and observation. We hope that the change will mean that this extraordinary collection, with all its variety and its many surprises, will be used by many more people and organisations in their books, magazines and films as well as for individual interest and research. The Wellcome Trust is already a leader in the field of open access and we want to make sure these images of the treasures in our collection, which have all been photographed with great care and skill over the years, can be used and enjoyed by anyone without restriction. We ask that Wellcome Library be credited for the images so that researchers and users are aware of the provenance and of the location of the original material in the photographs.