Daguerreotype
Morse met the inventor of the daguerreotype, Louis-Jacques-Mande Daguerre, in Paris in January 1839 when Daguerre's invention was announced [2]. While the daguerreotype fascinated Morse, he was concerned about how the new invention would compete with his telegraph. However, Morse's viewing of the daguerreotype alleviated his fears when he saw how revolutionary its technology was. Morse wrote a letter to his brother Sidney describing Daguerre's invention, which Sidney then published in the New-York Observer on April 20, 1839. While this was not the first report of the daguerreotype to appear in America, it was the first in-person report to appear in the United States.
Joseph-Philibert Girault de Prangey
Girault de Prangey studied painting in Paris at the École des Beaux-Arts and in 1841 he learned daguerreotypy, possibly from Louis Daguerre himself or from Hippolyte Bayard. Girault de Prangey was keenly interested in the architecture of the Middle East, and he toured Italy and the countries of the eastern Mediterranean between 1841 and 1844, producing over 900 daguerreotypes of architectural views, landscapes, and portraits.