N&W photos

[NW Mailing List]

Many of the N&W corporate photographs have numbers on them.  Are these some
form of serialization?  Is there any way to relate these numbers to the
date that the photo was taken?  Also, some have a notation "V.S.- # VA".
Does this indicate that the photo was made for a "valuation survey"?  If
so, were all photos from a particular survey made in the same year and
further are the years known for particular surveys?
Thanks,
Jim Cochran
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