William Henry Fox Talbot best known for his development of the calotype, an early photographic process that was an improvement over the daguerreotype of the French inventor L.-J.-M. Daguerre. Talbot’s calotypes involved the use of a photographic negative, from which multiple prints could be made; had his method been announced but a few weeks earlier, he and not Daguerre would probably have been known as the founder of photography.
Source: "William Henry Fox Talbot." Britannica School, Encyclopædia Britannica, 9 Mar. 2011. school.eb.com.ursus-proxy-10.ursus.maine.edu/levels/high/article/William-Henry-Fox-Talbot/71034.