1759	First statements by Lambert (France) of principles underlying photogrammetry
1839	First ever photographs by Daguerre and Nepce, in France
1840	French used photos in making topographic maps.
1850's	Photographs important in documenting exploration of the U.S. West (through 1870's).
1855	Maxwell proposed proof of trichromatic color vision by photographic experiments (1861; Sutton).
1858	Pictures of Paris from cameras mounted in free and captive balloons.
1862	Du Hauron analyzed multispectral imagery with single-lens beam splitter technique.
1860's	Claims of photos for military observations from balloons during American Civil War; none survive.
1870's	Simple additive color projection and viewing developed.
1880's	Camera airborne on kites in England, France, Russia.
1895	First color separations produced.
1895	Photos used by Seville in topographical surveys in Canada.
1900	Ives invented three-lens multispectral camera.
1903	Cameras attached to carrier pigeons.
1909	Wilbur Wright took first photos (movies) from an airplane.
1909	Berthon's lenticular color film process for additive system.
1910	Orel-Zeiss Stereoautograph: precursor to serial stereo-photos.
1915	Aerial photos used by British R.A.F. for reconnaissance, changing tactics of work in W.W.I.
1917	Unites States Signal corps used aerial photos in Mexican border war.
1920	Aerial photos used by petroleum geologists for exploration.
1923	Zeiss Stereoplanegraph.
1924	Multilayered color film developed.
1930	First aerial spectrophotography of the Earth by Krinov and colleagues (Russia).
1930's	Extensive use of aerial photos in Earth sciences and agriculture.
1931	Testing of aerial IR sensitive film from stratospheric balloon.
1935	Kodachrome appeared on market.
1937	Color film used in aerial surveys.
1938	Bausch and Lomb multiplex photogrammetric plotter.
1940	Kelsh plotters came into wide use.
1940 to 1943	Rapid advances in development of black-and-white and color IR (CIR) film for camouflage detection and haze penetration.
1941	Eardley's Aerial Photos: Their Use and Interpretation published
1940 to 1945	Tremendous strides in aerial photography and photogrammetry resulting from W.W.II military needs.
1944	First edition of AS's Manual of Photogrammetry.
1944	Military studies of water-depth penetration by two-band aerial photography.
1947	Publication of Krinov's Spectral Reflectance Properties of Natural Materials.
1950's	Orthophoto mapping became popular.
1952	Color aerial photos used in geological mapping.
1953	Colwell (U.S.) demonstrated detection of disease and stress in vegetation (published 1956).
1950's	Term "Remote Sensing" first used (generally ascribed to Evelyn Pruitt; see footnote on page Intro-1).
1956	Soviets published on spectro-zonal photography for mapping soils.
1960's	Color film entered into common use in aerial photography.
1960	Colwell's Manual of Photointerpretation and Ray's Aerial Photographs in Geologic Interpretation and Mapping published.
1960's	Considerable activity in multispectral photography applications.
1960	Wheeler's colorvision additive multispectral system.
1962	United States and Russian nine-lens multispectral cameras; Itek camera (ten lens) in 1963.
1963	USAF built Additive Color Viewer-Printer
1964	NASA inaugurated programs in testing usefulness of multiband photography for Earth resources.
1965	Multispectral additive color system developed by Yost and Wenderoth.
1967	First practical uses of UV photography.
1967	Two-volume Earth Resources Surveys from Space prepared by U.S. Army Corps of Engineers.
1968	ASP's Manual of Color Aerial Photography.
1968	SO65 multispectral photography experiment on Apollo-9
1975	Publication of ASP's Manual of Remote Sensing.