1. ISAAC Lab, School of Science and Technology, Nottingham Trent University, Nottingham, UK
2. Hispanic Society Museum and Library, New York, USA
3. The Getty Conservation Institute, Los Angeles, CA, USA
4. Collection Care Department, The National Archives, London, UK
5. Preservation Research and Testing Division, Library of Congress, Washington, DC, USA
6. Department of Conservation and Scientific Research, Freer Gallery of Art and Arthur M. Sackler Gallery, National Museum of Asian Art, Smithsonian Institution, Washington, DC, USA