Barbara Lemmen is Senior Photograph Conservator at the Conservation Center for Art and Historic Artifacts (CCAHA) in Philadelphia. She earned her BA in Art History and Chemistry from Williams College, and an MS from the Winterthur Museum/University of Delaware Program in Art Conservation (WUDPAC). Since 2002, she has been affiliated assistant faculty at the University of Delaware, supervising second and third year majors in photograph conservation in the WUDPAC program and lecturing in the undergraduate and WUDPAC programs. Barbara was the Consulting Photograph Conservator at the Library of Congress from 1992 until 1995, and an intern at the Image Permanence Institute and National Archives of Canada.  Prior to joining the staff of CCAHA in 2001, she maintained a private conservation practice in New Hampshire. 

Barbara has worked with allied heritage professionals, conservators, and students, nationally and internationally, most recently in Havana, Cuba. Some areas of special interest to her include conservation education, health and safety for conservators, and disaster recovery.  She is co-author of a book chapter on coatings on Polaroid prints.  Most recently,  she presented “Separation Anxieties: Approaches to Freeing Photographs That Are Stuck To Glazing Or To Each Other” with Emma Lowe at the AIC/CAC-ACCR conference in Montreal. A Fellow of AIC, Barbara has served as Chair, Program Chair, Secretary/Treasurer of the Photographic Materials Group and Chair of the Education and Training Committee for the Photographic Materials Group. ​