Academic Properties, Inc.
Ace USA
Allied Riser Communications
Arch Street United Methodist Church
1900 Rittenhouse Condos.
Academy of Music
American Philosophical Society
Arco Chemical Company
AT & T Corporation
The Athenaeum of Philadelphia
BDP International
The Barnes Foundation
Bell Atlantic
Breyer Wood Condominiums
Bryn Mawr College
Bryn Mawr Trust Company
Chemical Heritage Foundation
Chestnut Hill Academy
Chestnut Hill Historical Society
Chestnut Hill Hotel
Christ Church - Alexandria, VA
Christ Church Christiana Hundred - Greenville, DE
Church of the Advocate
CIGNA Corporation
City of Philadelphia
College of Physicians of Philadelphia
CoreStates Financial Group
County of Chester
Delaware River Port Authority
Devon Horse Show
Drexel University
Eastern Telelogic Corporation
Episcopal Community Services
Episcopal Diocese of PA
Fairmount Waterworks
Friends Center Corporation
Friends of Conversation Hall
Friends of Logan Square
Friends Select School
General Electric
Germantown Academy
Glencairn Mansion
Glenmede Trust Company
Global Crossing
Grace Methodist Church - Wilmington, DE
Graybar
Hagley Museum - Greenville, DE
Highway Tabernacle Church
The Hillier Group
Holiday Inn - Philadelphia
Imperial Metal and Chemical Company
Jones Lang LaSalle
The Library Company of Philadelphia

Lights of Liberty
Lincoln Property Company
Longwood Gardens
Medical College of Pennsylvania
Mother Bethel A.M.E. Church
National Park Service
National Trust For Historic Preservation
Nazareth Hospital
Old Christ Church
Overbrook School for the Blind
Old Pine Street Presbyterian Church
Old St. Joseph's Roman Catholic Church
Penn Mutual Life Insurance Company
William Penn Charter School
Pennsylvania Academy of the Fine Arts
Pennsylvania Bible Society
Philadelphia County Medical Society
Philadelphia Episcopal Cathedral
Philadelphia International Airport
Philadelphia Museum of Art
Philadelphia Newspapers, Inc.
Philadelphia Society for Preservation of Landmarks
(Samuel Powel House)
Philadelphia Zoo
Qwest Network Construction
Horace T. Potts Company
PQ Corporation
Radnor Corporation
Rosenbach Museum and Library
St. George Episcopal Church - Ardmore, PA
St. Mary’s at the Cathedral
Steamfitters Union Local 420
Society Hill Hotel
The Talbots, Inc.
Tasty Banking Company
Temple University
Tenet Health Care/Graduate Hospital
Thrift Drug Company
Transwestern Commercial Services
Trinity Memorial Church - Philadelphia, PA
Union League
United Parcel Service
United States Naval Depot
Universe Technologies, Inc.
University of the Arts (Merriam Theater)
University of Pennsylvania
Urban Enginees
Wade Communications
Wagner Free Institute of Science
Wissahickon Skating Club
Wistar Institute
Woodlands Mansion