“…10. For Canada: Siddiq (1988), Osberg andSiddiq (1988, 1992), Darroch (1983), Siddiq and Gwyn (1991), Di Matteo and George (1992), Gwyn and Siddiq (1992), Darroch and Soltow (1994), Bouchard (1998), Baskerville (1999). For the United States: Main (1975Main ( , 1977, Jones (1980Jones ( , 1984, Burchell (1987), Bolton (1982), Soltow (1975Soltow ( , 1979, Atack and Bateman (1981), Newell (1980Newell ( , 1986, Herscovici (1993), Pope (1980), Galenson and Pope (1989), Gregson (1996), Ferrie (1994), Steckel (1990), Steckel and Moehling (2001), Stewart (2006Stewart ( , 2009, Clay and Jones (2008), Walker (2000), and Canaday (2008).…”