Cynthia Lee Henthorn has taught design history, with an emphasis on advertising and marketing trends, at art and design colleges in New York City. In her current role as a developmental editor of online courseware, she creates interactive, Web-based textbooks and assessment tools for the higher education market.Cynthia Lee Henthorn has taught design history, with an emphasis on advertising and marketing trends, at art and design colleges in New York City. In her current role as a developmental editor of online courseware, she creates interactive, Web-based textbooks and assessment tools for the higher education market.