Diane,

I'm totally for preservation.
If there is absolutely no way to preserve a window card without removing the back layer, so be it.
And if it's not possible to de-acidify the whole card, same goes there.
But does de-acidifying the front automatically remove all discolouration/character, including the Cinema screening details? (Screening details in my opinion one of the best features of a window card.)
I thought that was where a light bleaching would come in.
The example of the window card I gave, I thought may well have gone through Studio C, maybe not. Hardly matters, client's property, their money, you can't be blamed for what they want.
(Or even them I guess, if that's what was in fashion at the time.)

Cheers,
Richard




On 27 Sep 2009, at 01:13, Diane Jeffrey wrote:

John -

I really understand your question here and concern. Let me try to elaborate a bit more.

Window cards are made of a layer of very thin paper that the poster is printed on. This paper is adhered to the card stock, giving it that thickness. The really old window cards are usually pretty beaten up. As I said they have been trimmed, but also very dirty, moldy, and with the paper being acidic, turning brown, faded, bug infestation, etc, etc. The only way to properly treat all of the above problems, is to remove the backing, and treat the poster paper by washing, deacidifying, treating mold etc., just like a one sheet is treated and then backed. You have to treat all of the issues to properly preserve the paper, so that it will survive the years to come. To my knowledge, this is the best way to do this. I know of no way to accomplish this by treating the thick card, there is no assurance that water, chemicals, etc will penetrate the thick card, you would have to leave it in solutions way too long, and the paper would start to disintegrate. Adhering a layer of acid free paper and card stock, to me, does not seem to compromise the integrity of the card, but I suppose that can be debated. If Dario, or anyone else has anything to add, that would be great. We are always looking for the best way to treat and preserve these treasures.
Diane
Studio C
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