 Bishop Spalding achieved national prominence for helping President Theodore Roosevelt and J. P. Morgan to end the Great Coal Strike of 1902 as a member of the Arbitration Commission that awarded the miners a retroactive 10% wage increase and reduced daily work hours from 10 to 9.Spalding wrote several books, including a biography of his uncle Archbishop Martin John Spalding, and poetry under the pseudonym Henry Hamilton.The Third Plenary Council of Baltimore of 1884 authorized a commission be established to create a uniform catechism.