Pennsylvania Register of Historic Sites and Landmarks. Old City Hall(PDF). National Register of Historic Places Inventory—Nomination Form. 1972-04 [2012-07-03]. (原始内容存档(PDF)于2016-03-04).
PHMC Historical Markers Search(Searchable database). Pennsylvania Historical and Museum Commission. Commonwealth of Pennsylvania. [2015-02-01]. (原始内容存档于2016-03-21).
Pennsylvania Register of Historic Sites and Landmarks. Old City Hall(PDF). National Register of Historic Places Inventory—Nomination Form. 1972-04 [2012-07-03]. (原始内容存档(PDF)于2016-03-04).
Huston goes to prison(PDF). The New York Times. 1911-05-24: 1 [2009-11-18]. (原始内容存档(PDF)于2021-04-28).
Graft sentences upheld(PDF). The New York Times. 1910-03-08: 2 [2009-11-18]. (原始内容存档(PDF)于2021-04-28).
PHMC Historical Markers Search(Searchable database). Pennsylvania Historical and Museum Commission. Commonwealth of Pennsylvania. [2015-02-01]. (原始内容存档于2016-03-21).