Quinn was a member of the Scottish Religious Advisory Committee of the BBC from 1963–1967. He wrote articles, reviews and pamphlets on theological and doctrinal matters, contributed articles to the New Catholic Encyclopedia and A Catholic…
Quinn was on the board of directors of the First National Bank of Wells, in Wells, Minnesota. Quinn served on the Minnesota Supreme Court from 1917 until his retirement in 1928.
James Brian Quinn (1928 – 28 August 2012) was an American academic and author. Quinn was a longtime professor at the Tuck School of Business and a proponent of knowledge management.