became a partner in L. & B. Curtis & Co., the firm of his father and uncle, one of the largest importing houses in the nation. It remained prosperous until the 1860s, when a series of disastrous investments by junior partner Joseph D. B. Curtis eventually led to the collapse and dissolution of the firm. An 1869 balance sheet for the Paris house of L. & B. Curtis & Co. reveals that the firm had debts in excess of four million francs, of which 2,290,000 were uncollectable bad debts.
committed to an insane asylum in April 1867 suffering from "progressive paralysis" and "derangement of Mind," He died there three years later leaving behind the ruins of L. & B. Curtis & Co.