1. See S.L. Engerman, ‘Servants to Slaves to Servants: Contract Labour and European Expansion’, this volume, Table I.
2. 2. See e.g.: E.A. Wrigley and R.S. Schofield, The Population History of England, 1541-1871, (Cambridge, Mass., 1981)
3. 3. D.W. Galenson, White Servitude in Colonial America, (Cambridge, 1981)
4. 4. D.C. Souden, 'Pre-Industrial English Local Migration Fields', Ph.D. Dissertation, Cambridge University, 1981
5. 5. D.C. Souden, 'Rogues, whores, and vagabonds'? Indentured servant emigrants to North America, and the case of mid-seventeenth-century Bristol', Social History, 3, no. 1, (January, 1978), pp. 23-41