Using unpublished data contained in samples from the manuscripts of the 1870 and 1880 censuses of manufactures--the earliest comprehensive estimates available--this study examines the extent and correlates of part-year manufacturing during the late 19th century. While the typical manufacturing...

Data from the manuscript census of manufacturing are used to estimate the effects of the length of the working day on output and wages. We find that the elasticity of output with respect to daily hours worked was positive but less than one--implying diminishing returns to increases in working...