Different films have different archival qualities- Ektachrome will "blue"
at rates dependent on your storage conditions.  Kodachrome is "near
archival" in that depending on storage and usage conditions it can last
for ~100 years. Black and white film stock is the most archival.  Contact
a professional with your needs and get their opinion.

On Mon, 24 Jun 1996, Sally Baulch wrote:

> On Mon, 24 Jun 1996, Vivian C.R. James wrote:
>
> > I am currently looking into having our collection photographed (4x5
> > transparencies) and I was wondering what are the rates that others have
>
> Warning.  Transparencies have a lifespan of approximately 10 years before
> they "blue."  If you are going to the expense of shooting everything,
> think about making a simultaneous set of slides (also not permanent) or
> black and white negatives.  Use quality processing or else you'll get the
> "blues" and "reds" of the 60s neighborhood pharmacist masquerading as a
> photo processor.
>
> Sally Baulch
> Texas Memorial Museum
>