Philadelphia Inquirer, The (PA)

Philadelphia Penitentiary

Pädiatrie & Pädologie

The Philadelphia Museum Bulletin

The Sphinx That Traveled to Philadelphia
за авторством: Wegner

The Philadelphia Country House
за авторством: McLean

Joy, PA
за авторством: Sherrill

Pädiatrie

PA Times

PA Times

Philadelphia Museum of Art Bulletin

Ethnic Renewal in Philadelphia's Chinatown
за авторством: Wilson

Blairsville Dispatch, The (PA)

Herald, The (Sharon, PA)

Meadville Tribune, The (PA)

Proceedings of the Academy of Natural Sciences of Philadelphia

Bulletin of Friends' Historical Society of Philadelphia

Bulletin of Friends' Historical Society of Philadelphia

Proceedings of the Academy of Natural Sciences of Philadelphia

Rózsa Péter

Beaver County Times, The (PA)

Daily Courier (Connellsville, PA)

Daily Item, The (Sunbury, PA)

Daily Review, The (Towanda, PA)

Erie Times-News (PA)

Lancaster New Era (PA)

Leader Times (Kittanning, PA)

Meadville Tribune, The (Meadville, PA)

Patriot-News, The (Harrisburg, PA)

Pittsburgh Post-Gazette (PA)

Pittsburgh Tribune Review (PA)

Times-Tribune, The (Scranton, PA)

Tribune-Democrat, The (Johnstown, PA)

Tribune-Review (Greensburg, PA)

Valley Independent (Monessen, PA)

York Daily Record (PA)

Records of the American Catholic Historical Society of Philadelphia