We describe our digitization of a uniquely detailed study of 19 th century production methods assembled by the United States Department of Labor (1899). The staff spent five years collecting and assembling data on the production of hundreds of highly specific products (as well as some services)...

This paper examines shifts over time in the relative demand for skilled labor in the United States. Although de-skilling in the conventional sense did occur overall in nineteenth century manufacturing, a more nuanced picture is that occupations "hollowed out": the share of "middle-skill" jobs -...