Katie Horak is an architectural historian and Principal at Architectural Resources Group, an architecture firm specializing in the historic built environment in the Western US. Katie leads the firm’s Los Angeles practice and is a respected authority on national and regional historic preservation standards, policy, and legal frameworks, with particular expertise in treatment and documentation methods. In addition to her work at ARG, Katie teaches graduate-level courses in historic site documentation at USC’s School of Architecture and is a frequent speaker at conferences and universities across the country. Katie’s love of mid- and late-20th century art and architecture has drawn her to a wide range of research projects, including most recently the use of color at Palm Spring’s Ocotillo Lodge, where she has a home. Katie is Founding President of the Docomomo US/Southern California chapter and is currently Secretary of Docomomo US.

Miami Managing Conservator and Professional Associate of the AIC, holds an M.S. in Historic Preservation with a focus in Architectural Conservation from the University of Pennsylvania Weitzman School of Design. She received her bachelor’s degree in Architecture and Art History from Wellesley College in addition to being a cross-registered student at MIT’s School of Architecture and Planning. With RLA since 2019, Caroline directs all architectural projects in addition to managing large outdoor sculpture conservation work for the Miami Studio. Those projects include conservation oversight of various contractors, facade and collections surveys, materials testing and specification development, as well as treatment implementation. 

President, Partner, and Chief Conservator Christina Varvi holds a M.S. in Historic Preservation with a concentration in Materials Conservation from Columbia University’s GSAPP. She is a Fellow of the American Institute for Conservation and Recognized Professional of the Association for Preservation Technology. She is a specialist in modern architectural materials, such as linoleum and synthetic finishes, outdoor sculpture planning, treatment, and surveys, as well as large-scale mosaics conservation and architecture surveys, testing, and specification development. She has lectured at a week-long workshop in the Netherlands in 2023 with the Getty Conservation Institute on the care and treatment of outdoor painted sculpture. 

Peter Meijer is the Vice President and founding member of HCG. He is a historic architect/conservator. Peter’s professional experience for 30 years has focused on the science of Architectural Conservation. He combines his undergraduate science degree with his Masters of Architecture degree in an analytical approach to the evaluation of materials. His expertise includes the conservation and restoration treatment of wood, concrete, stone, stucco, and other various materials.