ABSTRACT
The chapter aims to understand better the benchmarks from which standards of illumination were first conceived. It also aims to strengthen the correlation between smoke and the perception of light at an urban scale. Later, in response to the criticisms of environmental conditions and the city's reliance upon philanthropy made by the Pittsburgh Survey 1907-12, the Mellon Smoke investigations at Carnegie Mellon University, began. It is possibly as a result of this that the inauguration of Braddock Library, the first Carnegie library to open in America, was not reported in many local journals such as the Braddock Tribune, the Labour Tribune, nor the Pittsburgh Bulletin. Speeches were made in every room of the library, the Mayor's comment in the reading room clearly displays the social strata of gratitude even the attention of the man in the street had been arrested in going to and from his daily toil.
