Mathew Carey (1760-1839), Hezekiah Niles (1777-1839), and Tench Coxe (1755-1824) were significant figures during the post Revolutionary period in America. The three men advocated the development of a balanced national economy and economic independance through the encouragement of manufacturing and protectionist policies. Mathew Carey established the "American Musem" in 1787, the first successful magazine in America, and later served as director of the Bank of Philadelphia. After 1819, he turned his attention to the political economy of the emerging nation. Hezekiah Niles published the "Weekly Register," the most popular periodical of its time, and wrote essays and articles on the tariff, protection, banking, politics, and emancipation. Tench Coxe was an advisor to both Alexander Hamilton and Thomas Jefferson. He held several public offices including U.S. Comissioner of Revenue and Purveyor of Public Supplies.