Question: What is the date of death of Mary (Mai) Huttleston Rogers Coe's husband?
Sentence (from "William Robertson Coe"): William Robertson Coe (June 8, 1869 – March 15, 1955) was an insurance, railroad and business executive, a major owner and breeder of Thoroughbred racehorses, as well as a collector of Americana and an important philanthropist for the academic discipline of American Studies.
Relevant evidence: Yes