What is that orange light in the city? Buildings mark Easterseals' 100thCity-County, county courthouse, Koppers and Gulf buildings light up for Easterseals event.City-County, county courthouse, Koppers and Gulf buildings light up for Easterseals event.
Source: What is that orange light in the city? Buildings mark Easterseals' 100th (https://www.post-gazette.com/news/health/2019/04/20/orange-light-Pittsburgh-Buildings-Easterseals-100th-anniversary/stories/201904200055)