In nineteenth century America, blacksmiths were a fixture in every village, town and city, producing a diverse range of products from axes to wheels and services from repairs to horse-shoeing. In constructing his historical GNP accounts Robert Gallman opted to exclude these...

In nineteenth century America, blacksmiths were a fixture in every village, town and city, producing a diverse range of products from axes to wheels and services from repairs to horse-shoeing. In constructing his historical GNP accounts Robert Gallman opted to exclude these "jacks-of-all-trades"...

Beginning around 1880, public health issues and engineering advances spurred the installation of city water and sewer systems. As part of this growth, many cities chose to use lead service pipes to connect residences to city water systems. This choice had negative consequences for child...

Beginning around 1880, public health issues and engineering advances spurred the installation of city water and sewer systems. As part of this growth, many cities chose to use lead service pipes to connect residences to city water systems. This choice had negative consequences for child...