1915 February 1
The Carnegie Steel Company announced that it was increasing employment rolls by 8000 in order to meet increasing demands for steel.

1915 February 26
The Mellon Institute for Industrial Research, on O'Hara Street, Oakland, was dedicated.

1915 August 1
All steel mills in Pittsburgh were operating night and day to meet steel demands of nations at war.

1915 August 9
The new Manchester Bridge, connecting the Point with the North Side, was ready for traffic.

Courtesy of the Archives Service Center, University of Pittsburgh

1915 August 9
Rosenbaum and Company moved into its new building at Sixth and Liberty.

1915 December 24
Henry Clay Frick repaid schoolchildren the savings ($169,000) they lost when the Pittsburgh Bank for Savings closed its doors.