Other
National Trust for Historic Preservation in the United States
4
Bucks County Conservancy
2
Curtis Organ Restoration Society (Philadelphia, Pa.)
2
Preservation Coalition of Greater Philadelphia
2
American Institute for Conservation of Historic and Artistic Works. Book and Paper Group
1
Association for the Preservation of Civil War Sites
1
Building Research Institute, Washington, D.C
1
CLIO Group
1
Civil War Preservation Trust
1
Conservation Center for Art and Historic Artifacts
1
Gagne, Cole
1
Library of Congress
1
MacDonald, Jacqueline
1
National Trust for Historic Preservation in the United States. Mid-Atlantic Regional Office
1
Pennsylvania Historical and Museum Commission Office of Historic Preservation
1
Pennsylvania Historical and Museum Commission. Office of Historic Preservation
1
Philadelphia Historic Preservation Corporation
1
Philadelphia Society for the Preservation of Landmarks
1
Poore, Patricia
1
Preservation Fund of Pennsylvania
1
Society for the Preservation of New England Antiquities
1