The structure of wages narrowed considerably during the 1940's, increased slightly during the 1950's and 1960's, and then expanded greatly after 1970. The era of wage stretching of the past two decades has been a current focus, but we return attention here to the decade that was witness to an...

Two opposing views of the antebellum economy are tested. One is that aggregate economic activity was severely diminished and that unemployment was substantial and prolonged during several downturns. The alternative interpretation is that antebellum fluctuations were more apparent than real;...

This paper presents an analysis of birth weights and infant mortality in mid-nineteenth century Philadelphia using obstetrics records of Philadelphia's Almshouse hospital, an institution for the poor and their offspring. Children of the poor weighed between 2,900 and 3,200 grams on average at...

The condominium structure, which facilitates ownership of units in multi-family buildings, was only introduced to the US during the 1960s. We ask whether the subsequent development of condominiums encouraged high-income households to move to central cities. Although we document a strong positive...

During the nineteenth century the United States urbanized - the share of the population living in urban areas increased - and industrialized - the share of the labor force in manufacturing increased. Our survey of the literature and analyses of census data suggests that a key reason was the...

During the nineteenth century, the US manufacturing sector shifted away from the "hand labor" mode of production, characteristic of artisan shops, to the "machine labor" of the factory. This was the focus of an extremely detailed but extraordinarily complex study by the Commissioner of Labor...

The spatial mismatch hypothesis posits that employment decentralization isolated urban blacks from work opportunities. This paper focuses on one large employer that has remained in the central city over the twentieth century - the U.S. Postal Service. We find that blacks substitute towards...

The long-standing view in US economic history is the shift in manufacturing in the nineteenth century from the artisan shop to the mechanized factory led to "labor deskilling." Craft workers were displaced by mix of semi-skilled operatives, unskilled workers, and a reduced force of mechanics to...

The consensus view among economic historians is that wage inequality in American manufacturing followed an inverted-U path from the early nineteenth century until just before World War Two. The previous literature, however, has been unable to fully document this path over time, or fully assess...

This paper is my presidential address to the Economic History Association. In it, I review and extend the economic history of racial differences in per capita income from 1870 to the present. Specifically, I revise pre-World War Two benchmark estimates of Black/White income ratios originally...