Mary Slater
Senior Conservator
(202) 869-5270

Mary joined EverGreene in 2013 as a professional architectural conservator. She oversees projects from both a management and conservation perspective, working closely with other conservators and conservation technicians in all aspects of conservation treatment, assessment, and documentation. Mary is skilled at performing condition assessments of historic architecture and sites, developing repair and maintenance recommendations and specifications, and writing conservation reports and maintenance manuals. She also conducts historic paint investigations including onsite exposure windows and microscopic analysis.

Prior to joining EverGreene, Mary worked as an architectural conservator for nearly 15 years, first with the National Park Service in New Mexico, and then with a historic architectural firm in California. Her expertise includes the evaluation and treatment of historic lime and earthen plaster, brick, stone, terra cotta, and adobe. Mary has presented at statewide and international conferences on the conservation of historic architecture and archaeological sites.

Mary received her BA from University of Virginia in Charlottesville in English Language and Literature before attending University of Pennsylvania Graduate School of Fine Arts in Philadelphia earning her MS Historic Preservation.  She is active in member in the American Institute of Conservation (AIC) and holds a Professional Associate status.



Castro Theatre
Morgan State University
Bryce Hospital
Franklin Court Carriageway
Egyptian Theatre
Florida Theatre - Historic Finishes Study
Jim Sanborn Sculpture "Pyramids"
St. Paul's Episcopal Church
UNT Dallas College of Law Building
Colorado State Capitol, Old Supreme Court
Belden-Stratford Hotel Lobby Murals
George Fink Studio Assessment
Coronado Performing Arts Center
McCormick House Murals
New Mexico Museum of Art
Wyoming State Capitol
Fox Fullerton Theatre
Illinois State Capitol - Rotunda & Alcoves
Basilica Of The Sacred Heart of Jesus
Eames House
Monroe Street Abbey
55 Laguna Street
Planet Word Museum
St. Paul's Episcopal Church
Grand Central Air Terminal
Maine State Capitol
Surf Club
Redstone Castle
Alameda Theater San Antonio
Marymoor Park Wooden Sculptures
Curran Theatre
Sacramento Valley Station
Gardiner W. Spring Auditorium
Lyric Theatre
Unity Temple
Proctors Theatre
O'Cadiz Sculpture
Milton and Tamar Maltz Performing Arts Center
Helen Hayes Theatre
Enoch Pratt Free Library
Allen County Courthouse