Reviewed September 9, 2026. Source descriptions distinguish confirmed reporting, recollections and plans.
Central Penn Business Journal · January 20, 2017
Supports the reported 1974 construction year, Pennsylvania Blue Shield origin, rounded size, 16-acre site, 2013 departure, default/bank ownership, summer 2016 sale and proposed redevelopment. It does not establish a five-year vacancy or the final development.
Sari Soffer, abc27/WHTM · May 26, 2017
Supports the planned 7:30 a.m. event and viewing arrangements. This advance report alone does not confirm that the implosion occurred.
Griff Benner, abc27/WHTM · May 27, 2017
Same-day report confirms the actual implosion at 7:30 a.m., the township and county, and demolition work beginning in March. Its later construction dates and uses are expectations, not completed outcomes.
Wikipedia contributors · Undated; reviewed September 9, 2026
Reviewed as general corporate background. It does not establish Senate Plaza’s occupancy chronology or the specific 1939 incorporation claim. The archive uses Highmark’s own history below for the consolidation year.
Highmark · Undated; reviewed September 9, 2026
Additional primary source: confirms the 1996 consolidation of Pennsylvania Blue Shield and Blue Cross of Western Pennsylvania. It does not document Senate Plaza’s construction or opening.