Source Information

Ancestry.com. Mortality in retail trade: a statistical analysis [database on-line]. Provo, UT: Ancestry.com Operations Inc, 2005.
Original data: McGarry, Edmund D.. Mortality in retail trade : a statistical analysis of entrances into and exits from the retail grocery, drug, hardware, and shoe trades in Buffalo over the period 1918-1928, with special reference to the grocery trade. Buffalo: University of Buffalo Bureau of Business and Social Reserach, 1930.