1. Have the poor always been less likely to migrate? Evidence from inheritance practices during the age of mass migration;Abramitzky;J. Dev. Econ.,2013
2. Real incomes in the English speaking world, 1879–1913;Allen,1994
3. Barnard, A. 1985-6. “Colonial and State Government Finances,” ANU Source Papers in Economic History Nos. 8, 9, 10, 14, 15 and 16, at: https://rse.anu.edu.au/research/centre-economic-history/source-papers-economic-history.
4. Biavaschi, C. and Facchini, G., 2020. “Immigrant Franchise and Immigration Policy: evidence from the Progressive Era,” Bonn: IZA Discussion Paper 13195.
5. The Tyranny of Distance: How Distance Shaped Australia's History;Blainey,1966