Risk, James. “The Fresnel Affair: Manufacturing, Technology Transfer, Republicanism, and the Adoption of the Fresnel Lighthouse Lens in the United States, 1819-1852”. The Northern Mariner / Le marin du nord 28, no. 4 (July 31, 2019): 363–384. Accessed April 3, 2025. https://tnm.journals.yorku.ca/index.php/default/article/view/222.