Abraham Lincoln Foundation

American Philosophical Society

American Revolution Center

American Swedish Museum

Athenaeum of Philadelphia

Bartram's Garden

Chester County Historical Society

Cliveden of the Historic Trust

Conservation Center for Art & Historic Artifacts

Eastern State Penitentiary

Freedom's Backyard

Friends of Laurel Hill Cemetery

Historic Philadelphia

Historical Society of Pennsylvania

History Making Productions

Independence Seaport Museum

Landmarks Preservation

Laurel Hill Cemetery

Liberty Museum

Library Company of Philadelphia

Mercer Museum

National Archives, Regional Office

National Constitution Center

National Museum of American Jewish History

Independence National Historic Park

Mutter Museum at the College of Physicians

Preservation Alliance of Greater Philadelphia

Reading Terminal Market

Rosenbach Museum

Stenton

Culture Works / Hidden City Festival

Wagner Free Institute