Team
Since 1992, ACG has grown from a sole proprietorship to a full-service team of specialists.
In 2025, Gabrielle Crowther and Rebecca Gridley took over ownership of ACG from its founder, Leslie Gat.
Gabrielle Crowther - Partner and Conservator
Gabrielle earned an M.A. and M.S. in Conservation from University College London. She has interned and worked at the Victoria & Albert Museum, Brooklyn Museum, Central Park Conservancy, and Plowden & Smith, Ltd. in London. Gabrielle joined ACG in 2018. She is a Professional Member of AIC and has served as an editor for their Contemporary Art Network (CAN!) publication. She is a guest lecturer on the conservation treatment of plastics at the Conservation Center of NYU's Institute of Fine Arts. Areas of specialization include Modern and Contemporary Art, stone, and plastics.
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Rebecca Gridley - Partner and Conservator
Rebecca earned an M.S. in Conservation and an M.A. in Art History & Archaeology from NYU's Institute of Fine Arts. Before joining ACG in 2019, Rebecca worked as an objects conservator at The Metropolitan Museum of Art. She completed graduate internships at The Met, American Museum of Natural History, Brooklyn Museum, and The Frick Collection, and has worked in private practices in New York and Chicago. Rebecca is a Professional Member of AIC, for which she has held several volunteer leadership positions. She publishes and teaches on the conservation of glass and ceramics technology. Areas of specialization include Decorative Arts objects, ceramics, porcelain, glass, and other vitreous materials.
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Erin Toomey - Conservator
Erin earned a Certificate in Conservation and an M.A. in Art History & Archaeology from NYU's Institute of Fine Arts. Before joining ACG in 2003, she worked as an objects conservator on an archaeological excavation in Greece, and at The Metropolitan Museum of Art, Brooklyn Museum, New York City Parks Foundation, and the Hispanic Society of America. She is a guest lecturer on inpainting techniques at the Conservation Center of NYU's Institute of Fine Arts and a Professional Member of AIC. Areas of specialization include Antiquities, Ancient Greek pottery, Medieval and Renaissance sculpture, painted surfaces, stone, plaster, and modern surfaces.
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Leslie Gat - Founder and Senior Consulting Conservator
Leslie has worked in private practice and for major museums since 1981, and founded ACG in 1992. She earned a Certificate in Conservation and an M.A. in Art History & Archaeology from NYU's Institute of Fine Arts, and has worked in the objects conservation departments of The Metropolitan Museum of Art, Brooklyn Museum, and The Museum of Fine Arts, Boston. As an adjunct professor at the Conservation Center of NYU's Institute of Fine Arts, she teaches the introductory objects conservation treatment course. She is a Fellow of AIC. Areas of specialization include ​Antiquities (notably Mediterranean and Olmec), Renaissance sculpture and bronzes, African and Indigenous artifacts, metals, and large-scale and outdoor sculpture.
Zoe Storz - Studio Manager
Zoe graduated from Pitzer College in 2022 with a BA in Studio Art and English/World Literature, with respective focuses in photography and creative writing. She has worked as an administrator in NYC-based private practice conservation studios since 2022 and joined ACG in 2025. Prior to her administrative work, Zoe was an editorial intern at Los Angeles-based art and fashion publication Autre Magazine.