Declaration of Independence) Russell Frank Weigley; Nicholas B. Wainwright; Edwin Wolf. Philadelphia: A 300 Year History. W.W. Norton. 1982: 97–98 [2021-10-09]
Atmospheric Research. 2003-03-14 [2010-01-30]. (原始内容存档于2011-09-30). Pete Wolf. Meso-Analyst Severe Weather Guide. University Corporation for Atmospheric
studio drove that down to about $100 million thanks to tax rebates from Pennsylvania and D.C. Estimated loss: Biggest Money Losers (The Numbers) Hudson Hawk