Despite numerous and significant writings by historians of geography and biographers from other disciplines, and his authorship of the first geography textbooks written in and for the new American republic, most geographers are largely unaware of the contributions of Jedidiah Morse in academic geography. Writings about Morse suggest that he had alienated himself from many of his contemporaries early in his career through his authoritarian brand of Calvinistic republicanism, a perceived contradiction of that style with his entrepreneurial ambitions, his role in the controversial Bavarian Illuminati, and a dispute with a noted New England historian. But subsequent, broader intellectual movements sealed Morse's fate as a forgotten geographer (to most), including the end of the Second Great Awakening, Transcendentalism, Darwinism, and the “new,” process‐based geographical thinking inspired by Carl Ritter, Alexander von Humboldt, and Arnold Guyot. Regardless of the reasons for Morse's lost legacy, his contributions to geographical education are important and should be remembered.