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.
Frederick Langenheim
Langenheim and his brother William began working in 1840 for a German language newspaper edited by George Francis Schreiber in Philadelphia. Langenheim acquired a daguerreotype camera in 1841 from Von Voigtlander and formed a partnership with Schreiber in a photographic studio business for a couple of years. In 1843 Langenheim went into the photography studio business with his brother at 26–27 Exchange Street in Philadelphia. It was the "W. & F. Langenheim" firm and known as the Philadelphia daguerrotype establishment. They made in 1842 the first advertising picture in history. It was of patrons eating and drinking in the restaurant in the Philadelphia Exchange Building. The picture of people dining was hung in the hall of the building to attract potential customers for the dining room.
In 1845, Langenheim took the first set of panoramic pictures of Niagara Falls ever photographed. The panoramic set of five adjacent scenes were placed in panels in a display frame. The daguerreotype pictures were the first of Niagara Falls according to photo historian Robert Taft (1894-1955). They were the first such pictures to gain world fame. There were eight sets of copies made. A set was sent to Louis Jacques Mandé Daguerre and five crowned heads of Europe, Queen Victoria, and one each to the reigning rulers of Brunswick, Prussia, Saxony, and Wurttemberg. The seventh set was given to United States president James Knox Polk. The eighth set was retained by the Langenheim brothers.