The financial support of the following organisation is gratefully acknowledged:
The Economic and Social Research Council for research grant RES-000-22-2420 entitled
Migration, Economic Opportunity and the Railroads: Movement of Heavy Industrial
Workers in the North-East USA 1850-1900.
Particular thanks are due to Sarah Leggett, Simon Hodgkins and Katie Dooley, for undertaking
the original data entry and spreadsheet work on which this compilation is based.