To: Photograph Historians/Curators
I have a few questions regarding the history of dry glass negatives.
(I am writing text for a small exhibit.)

1)  During what time period were dry glass negatives manufactured?
2)  What processes make the glass support become brittle?

Replies may come to me directly.

Thank you,
Laura Quackenbush
Curator
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Leelanau Historical Museum € !Discover Your Place in Time!
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203 E. Cedar St. - PO Box 246 - Leland, MI 49654 - 231-256-7475

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