Annual reports and other documents relating to Philadelphia’s water supply system, 1796-1992
Newspaper Clipping Scrapbooks of Frederic Graff Jr.,Chief Engineer of the Philadelphia Water Department: Part 1, 1854-1857
The art and science of planning, designing, and erecting buildings or other structures. This topic overlaps with engineering, in that any building needs to be properly engineered to prevent catastrophic failures, and large architectural firms often employ engineers.