William Montague Ferry Jr. exhibited a diverse career trajectory, beginning with local governance roles in Michigan. He served as a supervisor and was elected to the Michigan Legislature. Ferry's military experience included service in the American Civil War, where he was recognized for his contributions. Transitioning from public service, he became a prominent figure in the lumber, iron, and mining industries, eventually becoming a significant mining magnate. Ferry's business acumen extended to various states and countries, and he was known for his philanthropy, particularly in healthcare and education.

William Montague Ferry Jr. presents a unique blend of industrial advocacy and regional philanthropy. His early career focused on Michigan's lumber and iron industries, transitioning later to become a significant mining magnate in Utah. Ferry's political career, marked by a series of unsuccessful bids for higher office, reveals a calculated approach to regional economic interests. His philanthropy, particularly in healthcare and education, showcases an unexpected commitment to community welfare, contrasting with his industrial pursuits. This juxtaposition of economic ambition and social generosity invites deeper inquiry into Ferry's motivations and the balance he sought between personal profit and public good.