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Acetate negatives

 Subject
Subject Source: TGM II, Genre and physical characteristic terms
Scope Note: Acetate safety films were first introduced in the early 1900s. Various types include diacetate and triacetate and are often difficult to distinguish from one another.

Found in 1 Collection or Record:

Helen Foster Snow negatives, approximately 1875-1991

 Sub-Series — Multiple Containers
Identifier: MSS 2219 Series 5 Sub-Series 4
Scope and Contents Contains negatives and copy negatives of various sizes for the photographs found throughout the Helen Foster Snow photographs series. Box 177 contains negatives #1-3610, Box 197 contains negatives #3627-9621, box 200 contains negatives #9267-9705, box 201 contains negatives in larger sleeves from #448-9355, and box 163 contains various other negatives, mostly from the higher range of photograph numbers. Box 195 and 196 contain glass slide negatives for #11,143-11, 248. Materials date from...
Dates: approximately 1875-1991