John Langdon (typographer) Langdon is known mostly through his association with Dan Brown, and the novels "Angels & Demons", "The Da Vinci Code," "The Lost Symbol, Inferno, and Origin". The protagonist of these novels was named Robert Langdon as a tribute to John Langdon, and he will continue to be so for his next 12 books, an estimate given by Dan Brown himself. Langdon is now a professor of typography and corporate identity at Drexel University in Philadelphia. He continues to do work on ambigrams, as well and fine art works that incorporate language, type, and philosophy. Langdon credits his paternal grandparents for
John Langdon (typographer) had found his groove and his leading character. Robert Langdon was carried forward to the enormously successful "The Da Vinci Code", and "Angels & Demons" rode its coattails to worldwide popularity, and Langdon's ambigrams went along for the ride. An expanded second edition of Wordplay was published in 2005 by Broadway Books/Random House, followed shortly by British and French editions. Robert Langdon was, to some degree, patterned after John Langdon. Both are university professors; Robert Langdon studies symbols, with a particular focus on religious iconography; John Langdon designs symbols, and exhibits a distinct interest in philosophy. John creates ambigrams, Robert