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Abstract
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Erotica and nudes
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Landscape
Literature
Nature
Photojournalism
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LL/96518
Frederick Langenheim
1850
, 19 November (patent)
Label "The Ground Glass of this Instrument is used by authority _ under F. Langenheim's Patent of Nov. 19th 1850."
Label
Ebay
eBay number: 333490191122.
Paper label inside a Beckers viewer.
LL/96518
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