| 1812 |
October 8: |
John Benjamin Dancer born in London. |
| 1819 |
March 17: |
Rene Prudent Patrice Dagron born in Beauvoir, Sarthe, France. |
| 1826-27 |
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Niepce produces the world's first camera photograph from nature. |
| 1835 |
February: |
Fox-Talbot makes first permanent paper contact prints from negatives. |
| 1839 |
January 7: |
Announcement made to the French Academy of Sciences that Daguerre has perfected a practical method of photography named the daguerrotype. |
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Autumn: |
Dancer makes first microphotograph on a daguerrotype plate at 160X reduction. |
| 1852 |
February: |
Dancer makes collodion microfilms. |
| 1853 |
March 3: |
Rosling shows microfilm of a newspaper before the Photographic Society of London. |
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May 21: |
Notes and Queries publishes numerous suggestions for library microfilming. |
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July 9: |
Athenaeum publishes letter on Herchel's "old idea" for microfilming reference materials. |
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Autumn: |
Sidebotham produces microfilms by Dancer's instructions. |
| 1854 |
January 28: |
Notes and Queries describes Diamond's microfilm of Fifteenth Century manuscript. |
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Early March: |
Shadbolt makes microfilms 5/8 mm in size. |
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March 29: |
Shadbolt puts first consignment of 24 microfilms for sale. |
| 1855 |
September: |
Taupenot publishes details of the collodio-albumen process and the first practical dry collodion plate. This is the process Dagron used. |
| 1856 |
Spring: |
Dancer shows his novelty microfilms to Sir David Brewster. |
| 1856-57 |
Winter: |
Brewster shows Dancer's microfilms in Italy and France. Suggests their use in jewelry and trinkets and for espionage purposes. |
| 1857 |
September: |
Microfilms by Dancer and Bertsch exhibited before The British Association for the Advancement of Science. |
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November 5: |
Shadbolt publishes his claim to invention of micro filming, based on his 1854 work. |
| 1859 |
May 15: |
Shadbolt publicly acknowledges Dancer's priority of microfilm experiments. |
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June 21: |
Dagron receives world's first microfilm patent for "a novelty microscope giving an illusion of depth". |
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_______: |
Microfilms exhibited at the Paris Photographic Salon were "the marvels of the Exposition". |
| 1862 |
Summer: |
Dagron exhibits microfilms at the London World's Fair, receives Honorable Mention; presents a set to Queen Victoria. |
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_______: |
Dagron publishes his "Cylindres photo-microscopiques montes et non-montes sur bijoux, brevetes en France et a l'etranger". |
| 1863 |
October 12: |
Col. Pike publishes his experiments with the Dagron process in America. |
| 1864 |
January: |
Brewster addresses the Photographic Society of Scotland on the Dagron process. |
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_______: |
Dagron publishes his "Traite de Photographie Micro scopique". Gives details of his process and price list of his equipment and supplies. This is the world's first book on microfilming techniques. |
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_______: |
John H. Morrow opens the first American commercial microfilm laboratory. |
| 1865 |
_______: |
Simpson proposes publication of books on microfilm. |
| 1867 |
Summer: |
Dagron wins Honorable Mention at Paris World's Fair. |
| 1870 |
July 19: |
Emperor Napoleon III declares war on Prussia. |
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September: |
Prussians surround Paris and cut last communication with unoccupied France. |
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November 10: |
Central government in Paris signs contract with Dagron And Fernique to produce official microfilm dispatches. |
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November 12: |
Dagron and Fernique leave Paris by balloon No. 27, the Niepce. |
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November 21: |
Dagron arrives in Tours. |
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November 29: |
Delegation finally authorizes Dagron to replace the microprint service of Blaise with his own improved microprint service. |
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December 5: |
Dagron makes first official microfilm dispatches. |
| 1871 |
January 28: |
Paris and Free France surrender: Dagron has delivered 115,000 messages to Paris by pigeon. |
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April: |
Pigeon post microfilms offered for sale in U.S.A. |
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Summer: |
Dagron reproduces 130,400 letters on a microfilm frame 0.5mm square. |
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Summer: |
Dagron publishes his "La Poste par pigeons voyageurs". |
| 1876 |
Summer: |
Many microfilms in trinkets shown at Centennial Exposition in Philadelphia. |
| 1878 |
Summer: |
Dagron receives Silver Medal at Paris World's Fair. |
| 1887 |
March |
Journal of the Franklin Society in Philadelphia announces that The Century Company, publishers of encyclopedias, has microfilmed over 25,000 page proofs on frames 1 ¾" x 2" in size for protection against loss and "the greatest convenience in storage and handling". |
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Summer |
Dagron publishes a lengthy description of his method of processing microfilm in the Philadelphia Photographer and The Camera. |
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November 24: |
John Benjamin Dancer dies in Manchester at age 75. |
| 1889 |
Summer: |
Eastman begins manufacture of nitrocellulose film. |
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September 2: |
Thomas Edison establishes 35mm as the first standard film gauge for nitrocellulose film and buys his first motion picture film from the Eastman Company. |
| 1891 |
March 17: |
Madsen receives U.S. Patent No. 448,447 on a microfilm camera. |
| 1900 |
August 14: |
Jansen, Gardiner and Kandler receive U.S. Patent No. 655,977 on a check microfilming camera. |
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June 13: |
Rene Prudent Patrice Dagron dies in Paris at age 81. |