Local libraries with aerial photograph collections
MU Ellis Library has soil surveys which include B/W aerial photographs overlaid with lines indicating soil type areas. Although soil surveys date back to 1899, only the most recent decades include aerial photos. Shelved in 1 East under call number A 57.38. See example MERLIN record.
The MU Geology Library has 8"x10" black-and white aerial stereo photographs, primarily of rural areas in northwest Missouri, produced by the US Department of Agriculture (and/or predecessor agencies) between 1938 and 1965. Missouri counties include Andrew, Atchison, Buchanan, Carroll, Jackson and Lafayette. Library use only. Contact for further details.
State Historical Society of Missouri has a collection of aerial photos dating from 1930s-1960s.
The Missouri State University Library in Springfield hosts collections of aerial photographs for two southwest Missouri counties:
Cartographic and Architectural Section holds millions of US Dept of Agriculture aerial photos dating from 1935-1954, covering about 90% of the contiguous United States. It also holds an extensive collection of military-flown imagery of the United States dating from about 1940 to 1960.
Ordering aerial photos from the National Archives
"All requests for aerial photography searches must be accompanied by a detailed map upon which the limits of the site are clearly outlined. The request should also include a brief geographic description of the site such as state, county, geographic coordinates, variant spellings of the site name and/or relative location of the site with nearby, well-known geographic locales. Once NWCSC receives this information, staff will indicate to the researcher either the indexes that should be purchased (if the area is large) or the individual photographs needed if the area is small. (source)