Were both the New England Offering and Smith's Magazine published in the 19th century?
Smith's Magazine Smith's Magazine was a Street & Smith magazine published monthly from April 1905 to February 1922.
Royal American Magazine The Royal American Magazine, or Universal Repository of Instruction and Amusement (January 1774 – March 1775) was a short-lived monthly periodical published in Boston, Massachusetts by Isaiah Thomas and later by Joseph Greenleaf. It supported patriot and revolutionary sentiment in the Colonies against the Kingdom of Great Britain, and had contributors that included John Hancock and Paul Revere.