fef495bf-3a51-4657-93d3-ab9123dc60d1 Elke Cwiertnia Conservation Scientist Rathgen-Forschungslabor (Rathgen Research Laboratory) Staatliche Museen zu Berlin (Berlin State Museum) Berlin, Germany Previous Next All members MEMBER INFORMATION Elke Cwiertnia is a conservation scientist working at the Rathgen-Forschungslabor (Rathgen Research Laboratory) in Berlin. She is specialised in the scientific analysis of cultural heritage objects, its contextualisation and improving conservation treatments. She holds a PhD in analytical science (Newcastle Upon Tyne) and a diploma in art technology, conservation and restoration of cultural heritage (Dresden). Currently, she is working on projects investigating residues in Ancient Egyptian pottery and paint layers from the 19th century. ABM CONFERENCES ABM 2021 Participant Art Bio Matters 2021 Virtual Conference Explore Full Abstract ABM MEMBER EVENTS PUBLICATIONS + PROJECTS

d1d14512-6cae-4f6b-86cb-bd78b7a94007 Rachel Lackner New York, NY, USA Previous Next All members MEMBER INFORMATION ABM CONFERENCES ABM MEMBER EVENTS ABM Seminar Series - April 2024 Seminar Series Presenter Identification of a lichen dye source in a fifteenth century medieval tapestry Explore PUBLICATIONS + PROJECTS Rachel M. Lackner [1], Solenn Ferron [2], Joël Boustie [2], Françoise Le Devehat [2], H. Thorsten Lumbsch [3], and Nobuko Shibayama [1] Unraveling a Historical Mystery: Identification of a Lichen Dye Source in a Fifteenth Century Medieval Tapestry As part of a long-term campaign to document, study, and conserve the Heroes tapestries from The Cloisters collection at The Metropolitan Museum of Art, organic colorant analysis of Julius Caesar (accession number 47.101.3) was performed. Analysis with liquid chromatography–quadrupole time-of-flight mass spectrometry (LC-qToF-MS) revealed the presence of several multiply chlorinated xanthones produced only by certain species of lichen. Various lichen dye sources have been documented in the literature for centuries and are classified as either ammonia fermentation method (AFM) or boiling water method (BWM) dyes based on their method of production. However, none of these known sources produce the distinctive metabolites present in the tapestry. LC-qToF-MS was also used to compare the chemical composition of the dyes in the tapestry with that of several species of crustose lichen. Lichen metabolites, including thiophanic acid and arthothelin, were definitively identified in the tapestry based on comparison with lichen xanthone standards and a reference of Lecanora sulphurata, confirming the presence of a lichen source. This finding marks the first time that lichen xanthones have been identified in a historic object and the first evidence that BWM lichen dyes may have been used prior to the eighteenth century. Explore

6cc21d15-cc42-4899-b231-b24faa352376 Miriam-Helene Rudd Graduate Student Winterthur/University of Delaware Program in Art Conservation Previous Next All members MEMBER INFORMATION Miriam-Helene Rudd is a fellow in the Winterthur/University of Delaware Program in Art Conservation, Class of 2024, majoring in objects and minoring in textiles. She graduated from the University of Delaware (2021) with majors in Art History and Art Conservation and minors in History and Fashion History & Culture. Miriam-Helene is currently at the National Museum of American History (Washington, D.C.) and looks forward to her third-year placement at the Museum of Modern Art (NYC). ABM CONFERENCES ABM 2023 Poster Presenter Art Bio Matters 2023 Conference Explore Full Abstract ABM 2023 Graduate Student Assistant Non-Destructive Analysis of Vegetable Leather Tannins: Viable or Fallible? Explore Full Abstract ABM MEMBER EVENTS PUBLICATIONS + PROJECTS

55886bdd-e849-487d-aa23-fb0e7198a8bf Hwai-ling Yeh-Lewis Senior Collections Manager Asian Art The Metropolitan Museum of Art New York, NY, USA Previous Next All members MEMBER INFORMATION Hwai-ling Yeh-Lewis oversees the storage and care of over 37,000 works in the Asian Art collection. This includes all administration procedures related to acquisitions, incoming and outgoing loans, the collection database, exhibitions, and collection inventory. She also manages internal and external requests for access to the collections, and works with the collections team to facilitate gallery installations and implement the highest standards for collection care. She received her MS in education from Indiana University. ABM CONFERENCES ABM 2023 Participant Art Bio Matters 2023 Conference Explore Full Abstract ABM 2021 Participant Art Bio Matters 2021 Virtual Conference Explore Full Abstract ABM MEMBER EVENTS PUBLICATIONS + PROJECTS

d48de370-e1af-4ffc-87a6-cce8add2baeb Ellen Pearlstein Professor The American Wing UCLA/Getty Program in the Conservation of Cultural HeritageNew York Los Angeles, CA, USA Previous Next All members MEMBER INFORMATION Ellen Pearlstein is a professor of Cultural Heritage Conservation at UCLA/Getty. She incorporates Indigenous instruction into graduate conservation education. Ellen is Director of the Andrew W. Mellon Opportunity for Diversity in Conservation, a Keck Prize awardee, and recent recipient of a Rome Prize. She is completing the upcoming Conservation and Stewardship of Indigenous Collections: Changes and Transformations, in the GCI’s Readings in Conservation series. ABM CONFERENCES ABM 2021 Participant Art Bio Matters 2021 Virtual Conference Explore Full Abstract ABM 2018 Participant Art Bio Matters 2018 Conference Explore Full Abstract ABM MEMBER EVENTS PUBLICATIONS + PROJECTS

c80cf3ea-88c8-4da6-a9de-f3bced6cde12 Matt Cushman Conservator of Paintings/Affiliated Assistant Professor Winterthur/University of Delaware Program in Art Conservation Wilmington, DE, USA Previous Next All members MEMBER INFORMATION Matt Cushman is a paintings conservator and conservation educator. His research interests include cleaning technologies and novel treatments for paintings and decorative surfaces. Prior to joining Winterthur, Matt held positions at the Williamstown Art Conservation Center, the Worcester Art Museum, and Yale University’s Institute for the Preservation of Cultural Heritage. ABM CONFERENCES ABM 2018 Participant Art Bio Matters 2018 Conference Explore Full Abstract ABM MEMBER EVENTS PUBLICATIONS + PROJECTS

9890d064-4b15-49f9-935c-ab92c607478a Gregory Dale Smith Otto N. Frenzel III Senior Conservation Scientist Indianapolis Museum of Art at Newfields Indianapolis, IN, USA Previous Next All members MEMBER INFORMATION Dr. Smith designed, outfitted, and now operates the conservation science laboratory at the IMA where he conducts technical studies of the museum’s collections. His research interests include undergraduate education at the Arts-Science interface, assessing pollution off-gassing of museum construction materials, and understanding the chemical degradation of artists’ materials. ABM CONFERENCES ABM 2023 Steering Committee Art Bio Matters 2023 Conference Explore Full Abstract ABM 2018 Participant Art Bio Matters 2018 Conference Explore Full Abstract ABM MEMBER EVENTS PUBLICATIONS + PROJECTS

73bf3725-2373-43b3-ad24-c5becf03e24f Chongwen Liu PhD student University of California, Los Angeles Los Angeles, CA, USA Previous Next All members MEMBER INFORMATION Chongwen Liu is a Ph.D. student at the UCLA/Getty Interdepartmental Program in the Conservation of Material Culture. His research interests focus on the development of antifouling materials for underwater cultural heritage as well as the analysis of lacquer materials through a multi-analytical approach. In the meantime, he is also learning and seeking opportunities for the possible application of artificial intelligence to assist conservation. ABM CONFERENCES ABM 2023 Graduate Student Assistant AI-assisted classification of microorganism strains on paper-based cultural relics Co-authored with Chenshu Liu and Allison Wall. Read the Abstract. Explore Full Abstract ABM 2023 Poster Presenter Art Bio Matters 2023 Conference Explore Full Abstract ABM MEMBER EVENTS PUBLICATIONS + PROJECTS

77b9d213-a6d3-4c29-a2e4-4a589e318fa1 Sheila Canby Birch Curator in Charge Department of Islamic Art Metropolitan Museum of Art New York, NY, USA Previous Next All members MEMBER INFORMATION Dr. Sheila (Patty) Canby joined the Metropolitan Museum of Art in 2009 after eighteen years as a curator at the British Museum. Her publications include Shah `Abbas: The Remaking of Iran, Islamic Art in Detail, Persian Painting, The Shahnama of Shah Tahmasp and Court and Cosmos: the Great Age of the Seljuqs. ABM CONFERENCES ABM 2018 Participant Art Bio Matters 2018 Conference Explore Full Abstract ABM MEMBER EVENTS PUBLICATIONS + PROJECTS

02152c23-e51f-44f0-b66a-b1800582f3b9 Sarah Scaturro Chief Conservator Cleveland Museum of Art Cleveland, OH, USA Previous Next All members MEMBER INFORMATION Sarah Scaturro is the Eric and Jane Nord Chief Conservator of the Cleveland Museum of Art. Previously, she was the Head of Costume Institute Conservation, Metropolitan Museum of Art. She received her training in textile and fashion conservation, curating, and history at the Fashion Institute of Technology in 2006. She is currently a PhD candidate at Bard Graduate Center, writing her dissertation on the professionalization of costume conservation. ABM CONFERENCES ABM 2021 Participant Art Bio Matters 2021 Virtual Conference Explore Full Abstract ABM MEMBER EVENTS PUBLICATIONS + PROJECTS