AT&T Mobility, LLC is proposing to install a telecommunications facility on the rooftop of an existing building located at 100 Lytton Ave, Pittsburgh, Allegheny County, Pennsylvania 15213 (N40° 26' 45.3" and W79° 57' 16.4"). AT&T Mobility, LLC invites comments from any interested party on the impact the proposed undertaking may have on any districts, sites, buildings, structures, or objects significant in American history, archaeology, engineering, or culture that are listed or determined to be eligible for listing in the National Register of Historic Places under National Historic Preservation Action Section 106. Comments pertaining specifically to historic resources may be sent to Impact7g, Inc., Attention Ms. Casey Radke at 9550 Hickman Road, Suite 105, Clive, IA 50325 or call 515-473-6256. Comments must be received within 30 days of the date of this notice. CS 269/CR