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1930s – 2026 · Run B #190
The frame: the photographic map of this ground begins with the federal farm flights. From the late 1930s the Department of Agriculture's adjustment and conservation programs photographed American farmland county by county, St. Joseph County among them, and the Indiana Historical Aerial Photo Index — built by the Indiana Geological Survey — inventories the inheritance whole: 951 county photomosaic index maps dating from the 1930s to the 1980s, locating 113,016 individual historical aerial photographs statewide, with copies orderable from the holding archives, the Survey's own among them at 39,992 photos. The USDA's Aerial Photography Field Office catalogue carries the county's coverage forward from the 1950s to the present, and directs all pre-1955 imagery enquiries to the National Archives — the farm-flight film's home. The county's own library keeps the local door: the SJCPL map case holds a St. Joseph County aerial-photographs group alongside its street sheets. The modern end of the line is continuous and dated: NAIP imagery of 2010 underlies the current US Topo Osceola sheet (item 12), and the county GIS parcel layer — read whole for this build in November 2026, 1,388 parcels inside the town line — rides on the current county imagery, the photographic map become the working map of every leg of this build. The gap, named honestly: the exact year of the first flight over Penn Township, and the flight's project symbol in the APFO catalogue, are not stated in any record reached for this section — the IHAPI index gives Indiana's coverage a 1930s start as a program, not this county's first year as a fact. The item is closed as a named gap on that point, with the frame above dug whole: its settlers are the Indiana Historical Aerial Photo Index read for St. Joseph County, and the USDA APFO imagery catalogue's St. Joseph County entry, which lists the county's coverage year by year.
Indiana Geological Survey, Indiana Historical Aerial Photo Index project record (951 county index maps, 1930s–1980s; 113,016 photographs; the IGS archive's 39,992); USDA Farm Production and Conservation / Aerial Photography Field Office imagery catalogues (the county-listing system; pre-1955 imagery at the National Archives); St. Joseph County Public Library map-case finding aid (the county aerial-photographs group); U.S. Geological Survey, US Topo Osceola collar (NAIP 2010); this build's Sources leg (the parcel layer, read November 2026).