map and government information library :: collections :: aerial photography :: legend for aerial photography holdings

Legend for Aerial Photography Holdings

The legend below appears at the top of all Georgia county aerial photography holdings tables. Choose a column heading for further information.

Year Have Index Scale Imagery Agency Codes

Year

Year the county and/or area was flown. For example, an entry of 1950/51 indicates the area was flown in 1950 and 1951.

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Have

Indicates the Map and Government Information Library 's holdings for a photo set and the extent of county coverage.

Code  Description
P

Partial flight only - entire county not covered by the photo set

none No photos held
fewLess 20% of total county area covered by photos held
partOver 20% but less 80% of total county area covered by photos held
most Over 80% of total county area covered by photos held
all 100% of total county area covered by photos held
NOTE: no P code entry indicates full county coverage

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Index

Number of index sheets for a photo set. A number in parentheses indicates the Map and Government Information Library does not hold any of the published index sheets for that set.

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Scale

The denominator of the scale of the photos, in thousands. For example, 20 indicates a photo set with a scale of 1:20,000. Entries in parentheses indicate the Map and Government Information Library does not have holdings of a photo set of a known scale.

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Imagery

Indicates film type, photo bases, and image reproduction type. The three subfields are separated by a slash, i.e. BW/P/+ indicates Black & White positive contact prints on a paper base.

Film Types

Code  Description
BW Black & White or Panchromatic film
BWIR Infrared Black & White film
CColor film
CIR Color Infrared film

Photo Bases

Code  Description
BLBlue line print
FContact print on film base
PContact print on paper base

Image Reproduction

Code  Description
+Positive
-Negative
  No code entry indicates positive

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Agency

Indicates the agency or organization responsible for the photos. For further information about a particular agency or organization please choose a code below.

Code Agency
ACCPCAthens - Clarke County Planning Commission
ASCSAgricultural Stabilization and Conservation Service
AT80A commercial company coverage of Metro Atlanta in the 1980s
COEU.S. Army Corps of Engineers
FBAAC Fort Benning Army Air Corps
GADOTState of Georgia, Department of Transportation
LOWE Lowe Engineers, Atlanta, GA
MI CO Unknown
NASANational Aeronautics and Space Administration
SCSSoil Conservation Service
T-S CSI Tri-State Consulting Services, Inc.
TVATennessee Valley Authority
USGSU.S. Geological Survey

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Codes

Area, flight or project code assigned to a photo set by the responsible agency or organization or the code assigned by the Map and Government Information Library for that set.

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