[4] The following year he successfully defended his hammer tile at the 1888 AAA Championships.

[5] He competed in events organized by the Gaelic Athletic Association (GAA) and was in the GAA's 1888 American Invasion Tour, where he won a gold and two silver medals at the national championships of the National Association of Amateur Athletes of America.

[6] Like many of the GAA team, Mitchell remained in New York City rather than returning to Ireland at the end of the tour.

Mitchel represented New York Athletic Club at the 1904 Olympics in St Louis, Missouri.

[7] Spalding Athletic Library issued several "how to" books, one being "How to become a weight thrower" by Olympian James Mitchel.