References/Notes/Attributions:
Source
United States congress, House of Representatives, Sixth Annual Report of the Commissioner of Labor, 1890, Part III, Cost of Living (Washington D.C. 1891); idem., Seventh Annual Report of the Commissioner of Labor, 1891, Part III, Cost of Living (Washington D.C. 1892)
Return of wages in the principal textile trades of the United Kingdom, with report therein. (P.P. 1889, LXX). United Kingdom Official Publication.
References
Boot, H. M. and Maindonald, J. H. 2007. New estimates of age- and sex- specific earnings and the male-female earnings gap in the British cotton industry, 1833-1906. Economic History Review. Published online 28-Aug-2007 doi: 10.1111/j.1468-0289.2007.00398.x