Hoyt Bleakley and his papers quoted in the Washington Post
"It ended in 1767, yet this experiment is still linked to higher incomes and education levels today" - Washington Post. 11/9/2018.
"University of Michigan economist Hoyt Bleakley has published several influential works which measure the long-term fallout of circumstances from hookworm eradication in the American South to river portages on the East Coast." "According to Bleakley, it’s difficult to separate the effect of education from that of the cultures and institutions which tend to be adopted by educated people."