* 2007 August 31 - The Philadelphia Inquirer On-Line/AP:
Penn, developer, plan 40- to 50-story office tower
* 2007 April 22 - The Philadelphia Inquirer:
Surprising details emerge on Post Office sale
U.S. investigators say a local development group had an "apparent conflict of interest" in its many project roles.
By Thomas Ginsberg
* 2007 Feb. 8 - Office of Inspector General, U.S. Postal Service:
Management Advisory – Sale of the Philadelphia Main Post Office