Sutton, Thomas (1976). "Microphotography". In Veaner, Allen B. (ed.). Studies in micropublishing, 1853–1976: documentary sources. Westport, Conn: Microform Review Inc. p.88. ISBN0-913672-07-6. Originally published in Dictionary of Photography (1858).
Newsletter of the Illinois State Archives & The Illinois State Historical Records Advory BoardArchived 16 May 2008 at the Wayback Machine Jesse White Secretary of State & State Archivist Volume 2 Number 1 Quote: "Despite Dancer's early work, in 1859, Ree Dagron, a French optician, received the first patent for microfilm. Using Dancer's techniques, Dagron manufactured and sold microphotograph trinkets. In 1870–71, during the Franco-Prussian War, Dagron demonstrated a practical use for microforms. During the siege of Paris, the French used carrier pigeons to transparrt microfilmed messages across German dices."
Tauber, Alfred S.; Myers, Wilbur C. (1962). "Photochromic micro-images, a key to practical microdocument storage and dissemination". American Documentation. 13: 403–409. doi:10.1002/asi.5090130408.
Rebuldela, Harriet K. (1974). "Ultrafiche Libraries: A User Survey of the Library of the American Civilization". Microform Review. 3 (3): 178–188. doi:10.1515/mfir.1974.3.3.178/.
Tauber, Alfred S.; Myers, Wilbur C. (1962). "Photochromic micro-images, a key to practical microdocument storage and dissemination". American Documentation. 13: 403–409. doi:10.1002/asi.5090130408.
Avedon, Don M. (1969). An overview of the computer output microfilm field. In Proceedings of the November 18-20, 1969, fall joint computer conference (AFIPS '69 (Fall)). Association for Computing Machinery. pp.613–623. doi:10.1145/1478559.1478634.
Newsletter of the Illinois State Archives & The Illinois State Historical Records Advory BoardArchived 16 May 2008 at the Wayback Machine Jesse White Secretary of State & State Archivist Volume 2 Number 1 Quote: "Despite Dancer's early work, in 1859, Ree Dagron, a French optician, received the first patent for microfilm. Using Dancer's techniques, Dagron manufactured and sold microphotograph trinkets. In 1870–71, during the Franco-Prussian War, Dagron demonstrated a practical use for microforms. During the siege of Paris, the French used carrier pigeons to transparrt microfilmed messages across German dices."