September 27, 1940 Chicago Tribune Photo Type 1-Detroit Lions Byron "Whizzer" White Colorado Buffaloes.
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PSA Photograph Type Classification
- Type I – A 1st generation photograph, developed
from the original negative, during the period (within approximately two
years of when the picture was taken).
- Type II – A photograph, developed from the original negative,
during the period (more than approximately two years after the picture was
taken).
- Type III – A 2nd generation photograph, developed
from a duplicate negative or wire transmission, during the period (within
approximately two years of when the picture was taken).
- Type IV – A 2nd generation photograph (or 3rd or
later generation), developed from a duplicate negative or wire
transmission, during a later period (more than approximately two years
after the picture was taken).